diff --git a/.editorconfig b/.editorconfig index 2c0e19c8..3692b3d7 100644 --- a/.editorconfig +++ b/.editorconfig @@ -7,3 +7,4 @@ charset = utf-8 indent_style = space indent_size = 2 trim_trailing_whitespace = true +max_line_length = off diff --git a/.gitattributes b/.gitattributes new file mode 100644 index 00000000..fcadb2cf --- /dev/null +++ b/.gitattributes @@ -0,0 +1 @@ +* text eol=lf diff --git a/.github/workflows/update-readme.yml b/.github/workflows/update-readme.yml new file mode 100644 index 00000000..b02700e7 --- /dev/null +++ b/.github/workflows/update-readme.yml @@ -0,0 +1,67 @@ +name: Update README + +on: + schedule: + # Run once a week on Monday at 00:00 UTC + - cron: "0 0 * * 1" + workflow_dispatch: # Allow manual triggering + push: + branches: + - master + - test + paths: + - "CONTRIBUTE_README.md" + - "scripts/**" + +jobs: + update-readme: + runs-on: ubuntu-latest + + steps: + - name: Checkout repository + uses: actions/checkout@v4 + with: + fetch-depth: 0 # Fetch all history for git operations + + - name: Set up Java + uses: actions/setup-java@v4 + with: + distribution: "temurin" + java-version: "25" + + - name: Restore stats cache + run: | + mkdir -p .tmp + # On scheduled runs, refresh all stats by not restoring cache + # On manual/push runs, use cache to avoid unnecessary API calls + if [ "${{ github.event_name }}" == "schedule" ]; then + echo "Scheduled run detected - will fetch fresh data for all repositories" + # Don't restore cache, let script fetch everything fresh + else + # Try to restore stats cache from previous run + if git show HEAD:.tmp/github-stats.txt > .tmp/github-stats.txt 2>/dev/null; then + echo "Restored existing stats cache from previous commit" + else + echo "No existing stats cache found, will fetch all data" + fi + fi + + - name: Run README generation workflow + env: + PAT: ${{ secrets.PAT }} + run: | + java --enable-preview --source 25 scripts/run_workflow.java + + - name: Commit updated README and stats cache + run: | + git config --local user.email "action@github.com" + git config --local user.name "GitHub Action" + git add -f README.md + # Always commit the stats cache so it persists for next run + git add -f .tmp/github-stats.txt || true + if git diff --staged --quiet; then + echo "No changes to commit" + else + git commit -m "Update README with latest GitHub stats [skip ci]" + git push + fi diff --git a/README.md b/README.md index 643f97f2..e9b442ce 100644 --- a/README.md +++ b/README.md @@ -2,88 +2,127 @@ A curated list of awesome Java frameworks, libraries and software. +[Please find a different kind of layout here](https://github.com/akullpp/awesome-java/tree/test). + +We are evaluating to make this the default, you can provide feedback here in [#1171](https://github.com/akullpp/awesome-java/issues/1171). + ## Contents -- [Projects](#projects) - - [Bean Mapping](#bean-mapping) - - [Build](#build) - - [Bytecode Manipulation](#bytecode-manipulation) - - [Caching](#caching) - - [CLI](#cli) - - [Cluster Management](#cluster-management) - - [Code Analysis](#code-analysis) - - [Code Coverage](#code-coverage) - - [Code Generators](#code-generators) - - [Compiler-compiler](#compiler-compiler) - - [Computer Vision](#computer-vision) - - [Configuration](#configuration) - - [Constraint Satisfaction Problem Solver](#constraint-satisfaction-problem-solver) - - [CSV](#csv) - - [Data Structures](#data-structures) - - [Database](#database) - - [Date and Time](#date-and-time) - - [Dependency Injection](#dependency-injection) - - [Development](#development) - - [Distributed Applications](#distributed-applications) - - [Distributed Transactions](#distributed-transactions) - - [Distribution](#distribution) - - [Document Processing](#document-processing) - - [Financial](#financial) - - [Formal Verification](#formal-verification) - - [Functional Programming](#functional-programming) - - [Game Development](#game-development) - - [Geospatial](#geospatial) - - [GUI](#gui) - - [High Performance](#high-performance) - - [HTTP Clients](#http-clients) - - [Hypermedia Types](#hypermedia-types) - - [IDE](#ide) - - [Imagery](#imagery) - - [Introspection](#introspection) - - [Job Scheduling](#job-scheduling) - - [JSON](#json) - - [JVM and JDK](#jvm-and-jdk) - - [Logging](#logging) - - [Machine Learning](#machine-learning) - - [Messaging](#messaging) - - [Microservice](#microservice) - - [Miscellaneous](#miscellaneous) - - [Mobile Development](#mobile-development) - - [Monitoring](#monitoring) - - [Native](#native) - - [Natural Language Processing](#natural-language-processing) - - [Networking](#networking) - - [ORM](#orm) - - [PaaS](#paas) - - [PDF](#pdf) - - [Performance analysis](#performance-analysis) - - [Platform](#platform) - - [Processes](#processes) - - [Reactive libraries](#reactive-libraries) - - [REST Frameworks](#rest-frameworks) - - [Science](#science) - - [Search](#search) - - [Security](#security) - - [Serialization](#serialization) - - [Server](#server) - - [Template Engine](#template-engine) - - [Testing](#testing) - - [Utility](#utility) - - [Version Managers](#version-managers) - - [Web Crawling](#web-crawling) - - [Web Frameworks](#web-frameworks) - - [Workflow Orchestration Engines](#workflow-orchestration-engines) -- [Resources](#resources) - - [Awesome Lists](#awesome-lists) - - [Communities](#communities) - - [Frontends](#frontends) - - [Influential Books](#influential-books) - - [Podcasts and Screencasts](#podcasts-and-screencasts) - - [Twitter](#twitter) - - [Websites](#websites) +- [Awesome Java](#awesome-java-) + - [Contents](#contents) + - [Projects](#projects) + - [Architecture](#architecture) + - [Artificial Intelligence](#artificial-intelligence) + - [Bean Mapping](#bean-mapping) + - [Build](#build) + - [Bytecode Manipulation](#bytecode-manipulation) + - [Caching](#caching) + - [CLI](#cli) + - [Argument Parsing](#argument-parsing) + - [Text-Based User Interfaces](#text-based-user-interfaces) + - [Cloud](#cloud) + - [Code Analysis](#code-analysis) + - [Code Coverage](#code-coverage) + - [Code Generators](#code-generators) + - [Compiler-compiler](#compiler-compiler) + - [Computer Vision](#computer-vision) + - [Configuration](#configuration) + - [Constraint Satisfaction Problem Solver](#constraint-satisfaction-problem-solver) + - [CSV](#csv) + - [Data Structures](#data-structures) + - [Database](#database) + - [Date and Time](#date-and-time) + - [Decentralization](#decentralization) + - [Dependency Injection](#dependency-injection) + - [Development](#development) + - [Distributed Applications](#distributed-applications) + - [Distributed Transactions](#distributed-transactions) + - [Distribution](#distribution) + - [Document Processing](#document-processing) + - [Financial](#financial) + - [Formal Verification](#formal-verification) + - [Functional Programming](#functional-programming) + - [Game Development](#game-development) + - [Geospatial](#geospatial) + - [GUI](#gui) + - [High Performance](#high-performance) + - [HTTP Clients](#http-clients) + - [Hypermedia Types](#hypermedia-types) + - [IDE](#ide) + - [Imagery](#imagery) + - [Introspection](#introspection) + - [Job Scheduling](#job-scheduling) + - [JSON](#json) + - [JVM and JDK](#jvm-and-jdk) + - [Logging](#logging) + - [Machine Learning](#machine-learning) + - [Messaging](#messaging) + - [Microservice](#microservice) + - [Miscellaneous](#miscellaneous) + - [Mobile Development](#mobile-development) + - [Monitoring](#monitoring) + - [Native](#native) + - [Natural Language Processing](#natural-language-processing) + - [Networking](#networking) + - [ORM](#orm) + - [PaaS](#paas) + - [Pathfinding](#pathfinding) + - [PDF](#pdf) + - [Performance analysis](#performance-analysis) + - [Platform](#platform) + - [Apache Commons](#apache-commons) + - [Other](#other) + - [Processes](#processes) + - [Reactive libraries](#reactive-libraries) + - [REST Frameworks](#rest-frameworks) + - [Science](#science) + - [Search](#search) + - [Security](#security) + - [Serialization](#serialization) + - [Server](#server) + - [Template Engine](#template-engine) + - [Testing](#testing) + - [Asynchronous](#asynchronous) + - [BDD](#bdd) + - [Fixtures](#fixtures) + - [Frameworks](#frameworks) + - [Matchers](#matchers) + - [Miscellaneous](#miscellaneous-1) + - [Mocking](#mocking) + - [Utility](#utility) + - [Version Managers](#version-managers) + - [Web Crawling](#web-crawling) + - [Web Frameworks](#web-frameworks) + - [Workflow Orchestration Engines](#workflow-orchestration-engines) + - [Resources](#resources) + - [Related Awesome Lists](#related-awesome-lists) + - [Communities](#communities) + - [Frontends](#frontends) + - [Influential Books](#influential-books) + - [Podcasts and Screencasts](#podcasts-and-screencasts) + - [People](#people) + - [Socials](#socials) + - [Websites](#websites) + - [Contributing](#contributing) ## Projects +### Architecture + +_Frameworks and libraries that help implementing and verifying design and architecture concepts._ + +- [ArchUnit](https://github.com/TNG/ArchUnit) - Test library for specifying and asserting architecture rules. +- [jMolecules](https://github.com/xmolecules/jmolecules) - Annotations and interfaces to express design and architecture concepts in code. + +### Artificial Intelligence + +_Frameworks that help you to leverage LLMs and AI._ + +- [LangChain4j](https://github.com/langchain4j/langchain4j) - Simplifies integration of LLMs with unified APIs and a comprehensive toolbox. +- [MCP Java SDK](https://github.com/modelcontextprotocol/java-sdk) - Enables applications to interact with AI models and tools through a standardized interface (i.e. Model Context Protocol), supporting both synchronous and asynchronous communication patterns. +- [simple-openai](https://github.com/sashirestela/simple-openai) - Library to use the OpenAI API (and compatible ones) in the simplest possible way. +- [Spring AI](https://spring.io/projects/spring-ai) - Application framework for AI engineering for Spring. + ### Bean Mapping _Frameworks that ease bean mapping._ @@ -102,7 +141,7 @@ _Tools that handle the build cycle and dependencies of an application._ - [Apache Maven](https://maven.apache.org) - Declarative build and dependency management that favors convention over configuration. It might be preferable to Apache Ant, which uses a rather procedural approach and can be difficult to maintain. - [Bazel](https://bazel.build) - Tool from Google that builds code quickly and reliably. -- [Buck](https://github.com/facebook/buck) - Encourages the creation of small, reusable modules consisting of code and resources. +- [Buck2](https://github.com/facebook/buck2) - Encourages the creation of small, reusable modules consisting of code and resources. - [Gradle](https://gradle.org) - Incremental builds programmed via Groovy instead of declaring XML. Works well with Maven's dependency management. ### Bytecode Manipulation @@ -115,8 +154,10 @@ _Libraries to manipulate bytecode programmatically._ - [Byteman](https://byteman.jboss.org) - Manipulate bytecode at runtime via DSL (rules); mainly for testing/troubleshooting. (LGPL-2.1-or-later) - [cglib](https://github.com/cglib/cglib) - Bytecode generation library. - [Javassist](https://github.com/jboss-javassist/javassist) - Tries to simplify bytecode editing. +- [Maker](https://github.com/cojen/maker) - Provides low level bytecode generation. - [Mixin](https://github.com/SpongePowered/Mixin) - Manipulate bytecode at runtime using real Java code. - [Perses](https://github.com/nicolasmanic/perses) - Dynamically injects failure/latency at the bytecode level according to principles of chaos engineering. +- [Recaf](https://www.coley.software/Recaf/) - JVM reverse engineering toolkit, essentially an IDE for Java bytecode. ### Caching @@ -131,26 +172,31 @@ _Libraries that provide caching facilities._ _Libraries for everything related to the CLI._ -- [ASCII Table](https://github.com/vdmeer/asciitable) - Library to draw tables in ASCII. -- [Airline](https://github.com/airlift/airline) - Annotation-based framework for parsing Git-like command-line arguments. -- [args4j](http://args4j.kohsuke.org) - Small library to parse command-line arguments. -- [Jansi](https://github.com/fusesource/jansi) - ANSI escape codes to format console output. -- [Java ASCII Render](https://github.com/indvd00m/java-ascii-render) - Graphical primitives for the console. +#### Argument Parsing + +_Libraries to assist with parsing command line arguments._ + +- [Airline](https://rvesse.github.io/airline/) - Annotation-based framework for parsing Git-like command-line arguments. - [JCommander](http://jcommander.org) - Command-line argument-parsing framework with custom types and validation via implementing interfaces. -- [jbock](https://github.com/h908714124/jbock) - Typesafe, reflection-free, annotation based command-line parser. -- [Jexer](https://gitlab.com/klamonte/jexer) - Advanced console (and Swing) text user interface (TUI) library, with mouse-draggable windows, built-in terminal window manager, and sixel image support. Looks like [Turbo Vision](https://en.wikipedia.org/wiki/Turbo_Vision). +- [jbock](https://github.com/jbock-java/jbock) - Reflectionless command line parser. - [JLine](https://github.com/jline/jline3) - Includes features from modern shells like completion or history. -- [JOpt Simple](https://jopt-simple.github.io/jopt-simple/) - Fluent parser that uses the POSIX#getopt and GNU#getopt_long syntaxes. - [picocli](https://picocli.info) - ANSI colors and styles in usage help with annotation-based POSIX/GNU/any syntax, subcommands, strong typing for both options and positional args. + +#### Text-Based User Interfaces + +_Libraries that provide TUI frameworks, or building blocks related functions._ + +- [Jansi](https://github.com/fusesource/jansi) - ANSI escape codes to format console output. +- [Jexer](https://gitlab.com/AutumnMeowMeow/jexer) - Advanced console (and Swing) text user interface (TUI) library, with mouse-draggable windows, built-in terminal window manager, and sixel image support. Looks like [Turbo Vision](https://en.wikipedia.org/wiki/Turbo_Vision). - [Text-IO](https://github.com/beryx/text-io) - Aids the creation of full console-based applications. - [Lanterna](https://github.com/mabe02/lanterna) - Easy console text-GUI library, similar to curses. (LGPL-3.0-only) -### Cluster Management +### Cloud -_Frameworks that can dynamically manage applications inside of a cluster._ +_Libraries to integrate or use cloud-specific features._ -- [Apache Aurora](https://aurora.apache.org) - Mesos framework for long-running services and cron jobs. -- [Singularity](http://getsingularity.com) - Mesos framework that makes deployment and operations easy. It supports web services, background workers, scheduled jobs, and one-off tasks. +- [AWS SDK for Java](https://github.com/aws/aws-sdk-java) - Provides Java APIs for interacting with Amazon Web Services. +- [Google Cloud Client Libraries](https://github.com/googleapis/google-cloud-java) - Client libraries for accessing Google Cloud services from Java applications. ### Code Analysis @@ -158,14 +204,17 @@ _Tools that provide metrics and quality measurements._ - [Checkstyle](https://github.com/checkstyle/checkstyle) - Static analysis of coding conventions and standards. (LGPL-2.1-or-later) - [Error Prone](https://github.com/google/error-prone) - Catches common programming mistakes as compile-time errors. +- [Error Prone Support](https://github.com/PicnicSupermarket/error-prone-support) - Error Prone extensions: extra bug checkers and a large battery of Refaster templates. - [Infer](https://github.com/facebook/infer) - Modern static analysis tool for verifying the correctness of code. - [jQAssistant](https://jqassistant.org) - Static code analysis with Neo4J-based query language. (GPL-3.0-only) - [NullAway](https://github.com/uber/NullAway) - Eliminates NullPointerExceptions with low build-time overhead. - [PMD](https://github.com/pmd/pmd) - Source code analysis for finding bad coding practices. +- [p3c](https://github.com/alibaba/p3c) - Provides Alibaba's coding guidelines for PMD, IDEA and Eclipse. +- [RefactorFirst](https://github.com/jimbethancourt/RefactorFirst) - Identifies and prioritizes God Classes and Highly Coupled classes. - [SonarJava](https://github.com/SonarSource/sonar-java) - Static analyzer for SonarQube & SonarLint. (LGPL-3.0-only) -- [Sourcetrail](https://www.sourcetrail.com) - Visual source code navigator. - [Spoon](https://github.com/INRIA/spoon) - Library for analyzing and transforming Java source code. - [Spotbugs](https://github.com/spotbugs/spotbugs) - Static analysis of bytecode to find potential bugs. (LGPL-2.1-only) +- [ToolsHref](https://toolshref.com) - Online Java code analyzer and JSON-to-Mermaid visualization tool. ### Code Coverage @@ -181,13 +230,19 @@ _Tools that generate patterns for repetitive code in order to reduce verbosity a - [ADT4J](https://github.com/sviperll/adt4j) - JSR-269 code generator for algebraic data types. - [Auto](https://github.com/google/auto) - Generates factory, service, and value classes. +- [Avaje Http Server](https://avaje.io/http/) - Generates Lightweight JAX-RS style http servers using Javalin or Helidon (Nima) SE. - [Bootify ![c]](https://bootify.io) - Browser-based Spring Boot app generation with JPA model and REST API. +- [EasyEntityToDTO](https://github.com/Marcel091004/EasyEntityToDTO) - Annotation processor for automatic DTO and Mapper generation with zero boilerplate. - [FreeBuilder](https://github.com/inferred/FreeBuilder) - Automatically generates the Builder pattern. +- [Geci](https://github.com/verhas/javageci) - Discovers files that need generated code, updates automatically and writes to the source with a convenient API. - [Immutables](https://immutables.github.io) - Annotation processors to generate simple, safe and consistent value objects. - [JavaPoet](https://github.com/square/javapoet) - API to generate source files. - [JHipster](https://github.com/jhipster/generator-jhipster) - Yeoman source code generator for Spring Boot and AngularJS. - [Joda-Beans](https://www.joda.org/joda-beans/) - Small framework that adds queryable properties to Java, enhancing JavaBeans. +- [JPA Buddy ![c]](https://www.jpa-buddy.com) - Plugin for IntelliJ IDEA. Provides visual tools for generating JPA entities, Spring Data JPA repositories, Liquibase changelogs and SQL scripts. Offers automatic Liquibase/Flyway script generation by comparing model to DB, and reverse engineering JPA entities from DB tables. +- [JSpecify Package-Info Generator](https://github.com/bcaillard/jspecify-packageinfo-generator) - Maven plugin that automatically generates package-info.java files with JSpecify annotations (@NullMarked and @NullUnmarked), helping you manage nullness boundaries in your Java projects without manual boilerplate. - [Lombok](https://projectlombok.org) - Code generator that aims to reduce verbosity. +- [Record-Builder](https://github.com/Randgalt/record-builder) - Companion builder class, withers and templates for Java records. - [Telosys](https://www.telosys.org/) - Simple and light code generator available as an Eclipse Plugin and also as a CLI. ### Compiler-compiler @@ -210,11 +265,14 @@ _Libraries which seek to gain high level information from images and videos._ _Libraries that provide external configuration._ +- [avaje config](https://avaje.io/config/) - Loads yaml and properties files, supports dynamic configuration, plugins, file-watching and config event listeners. - [centraldogma](https://github.com/line/centraldogma) - Highly-available version-controlled service configuration repository based on Git, ZooKeeper and HTTP/2. -- [cfg4j](https://github.com/cfg4j/cfg4j) - Modern configuration library for distributed apps written in Java. - [config](https://github.com/lightbend/config) - Configuration library supporting Java properties, JSON or its human optimized superset HOCON. - [Configurate](https://github.com/SpongePowered/Configurate) - Configuration library with support for various configuration formats and transformations. +- [Curator Framework](https://curator.apache.org/) - High-level API for Apache ZooKeeper. - [dotenv](https://github.com/shyiko/dotenv) - Twelve-factor configuration library which uses environment-specific files. +- [Externalized Properties](https://github.com/joel-jeremy/externalized-properties) - Simple, lightweight, yet powerful configuration library which supports resolution of properties from external sources such as files, databases, git repositories, and any custom sources, plus an extensible post-processing/conversion mechanism. +- [Gestalt](https://github.com/gestalt-config/gestalt) - Gestalt offers a comprehensive solution to the challenges of configuration management. It allows you to source configuration data from multiple inputs, merge them intelligently, and present them in a structured, type-safe manner. - [ini4j](http://ini4j.sourceforge.net) - Provides an API for handling Windows' INI files. - [KAConf](https://github.com/mariomac/kaconf) - Annotation-based configuration system for Java and Kotlin. - [microconfig](https://microconfig.io) - Configuration system designed for microservices which helps to separate configuration from code. The configuration for different services can have common and specific parts and can be dynamically distributed. @@ -227,6 +285,7 @@ _Libraries that help with implementing optimization and satisfiability problems. - [Choco](https://choco-solver.org) - Off-the-shelf constraint satisfaction problem solver that uses constraint programming techniques. - [JaCoP](https://github.com/radsz/jacop) - Includes an interface for the FlatZinc language, enabling it to execute MiniZinc models. (AGPL-3.0) - [OptaPlanner](https://www.optaplanner.org) - Business planning and resource scheduling optimization solver. +- [Timefold](https://timefold.ai/docs) - Flexible solver with Spring/Quarkus support and quickstarts for the Vehicle Routing Problem, Maintenance Scheduling, Employee Shift Scheduling and much more. ### CSV @@ -262,7 +321,7 @@ _Everything that simplifies interactions with the database._ - [Apache Calcite](https://calcite.apache.org) - Dynamic data management framework. It contains many of the pieces that comprise a typical database management system. - [Apache Drill](https://drill.apache.org) - Distributed, schema on-the-fly, ANSI SQL query engine for Big Data exploration. - [Apache Phoenix](https://phoenix.apache.org) - High-performance relational database layer over HBase for low-latency applications. -- [AranoDB](https://github.com/arangodb/arangodb-java-driver) - ArangoDB Java driver. +- [ArangoDB](https://github.com/arangodb/arangodb-java-driver) - ArangoDB Java driver. - [Chronicle Map](https://github.com/OpenHFT/Chronicle-Map) - Efficient, in-memory (opt. persisted to disk), off-heap key-value store. - [Debezium](https://debezium.io/) - Low latency data streaming platform for change data capture. - [druid](https://druid.apache.org) - High-performance, column-oriented, distributed data store. @@ -271,6 +330,7 @@ _Everything that simplifies interactions with the database._ - [Flyway](https://flywaydb.org) - Simple database migration tool. - [H2](https://h2database.com) - Small SQL database notable for its in-memory functionality. - [HikariCP](https://github.com/brettwooldridge/HikariCP) - High-performance JDBC connection pool. +- [HSQLDB](https://hsqldb.org/) - HyperSQL 100% Java database. - [JDBI](http://jdbi.org) - Convenient abstraction of JDBC. - [Jedis](https://github.com/xetorthio/jedis) - Small client for interaction with Redis, with methods for commands. - [Jest](https://github.com/searchbox-io/Jest) - Client for the Elasticsearch REST API. @@ -278,40 +338,53 @@ _Everything that simplifies interactions with the database._ - [Jinq](https://github.com/my2iu/Jinq) - Typesafe database queries via symbolic execution of Java 8 Lambdas (on top of JPA or jOOQ). - [jOOQ](https://www.jooq.org) - Generates typesafe code based on SQL schema. - [Leaf](https://github.com/Meituan-Dianping/Leaf) - Distributed ID generate service. +- [Lettuce](https://lettuce.io/) - Lettuce is a scalable Redis client for building non-blocking Reactive applications. - [Liquibase](http://www.liquibase.org) - Database-independent library for tracking, managing and applying database schema changes. - [MapDB](http://www.mapdb.org) - Embedded database engine that provides concurrent collections backed on disk or in off-heap memory. - [MariaDB4j](https://github.com/vorburger/MariaDB4j) - Launcher for MariaDB that requires no installation or external dependencies. - [Modality](https://github.com/arkanovicz/modality) - Lightweight ORM with database reverse engineering features. -- [Spring Data JPA MongoDB Expressions](https://github.com/mhewedy/spring-data-jpa-mongodb-expressions) - Allows you to use MongoDB query language to query your relational database. -- [Trino](https://trino.io) - Distributed SQL query engine for big data. -- [QueryStream](https://github.com/querystream/querystream) - Build JPA Criteria queries using a Stream-like API. +- [OpenDJ](https://github.com/OpenIdentityPlatform/OpenDJ) - LDAPv3 compliant directory service, developed for the Java platform, providing a high performance, highly available, and secure store for the identities. - [Querydsl](http://www.querydsl.com) - Typesafe unified queries. +- [QueryStream](https://github.com/querystream/querystream) - Build JPA Criteria queries using a Stream-like API. +- [QuestDB](https://github.com/questdb/questdb) - High-performance SQL database for time series. Supports InfluxDB line protocol, PostgreSQL wire protocol, and REST. - [Realm](https://github.com/realm/realm-java) - Mobile database to run directly inside phones, tablets or wearables. - [Redisson](https://github.com/redisson/redisson) - Allows for distributed and scalable data structures on top of a Redis server. - [requery](https://github.com/requery/requery) - Modern, lightweight but powerful object mapping and SQL generator. Easily map to or create databases, or perform queries and updates from any Java-using platform. - [Speedment](https://github.com/speedment/speedment) - Database access library that utilizes Java 8's Stream API for querying. +- [Spring Data Dynamic Query](https://github.com/tdilber/spring-data-dynamic-query) - Unified dynamic query interface for Spring Data JPA, MongoDB, and Elasticsearch, enabling advanced JOIN(s), OR logic, scoped conditions, powerful projections and advanced features with zero boilerplate. +- [Spring Data JPA MongoDB Expressions](https://github.com/mhewedy/spring-data-jpa-mongodb-expressions) - Allows you to use MongoDB query language to query your relational database. +- [Trino](https://trino.io) - Distributed SQL query engine for big data. - [Vibur DBCP](https://www.vibur.org) - JDBC connection pool library with advanced performance monitoring capabilities. - [Xodus](https://github.com/JetBrains/xodus) - Highly concurrent transactional schema-less and ACID-compliant embedded database. +- [CosId](https://github.com/Ahoo-Wang/CosId) - Universal, flexible, high-performance distributed ID generator. +- [Apache ShardingSphere](https://github.com/apache/shardingsphere) - Distributed SQL transaction & query engine that allows for data sharding, scaling, encryption, and more on any database. ### Date and Time _Libraries related to handling date and time._ -- [Almanac Converter](https://github.com/chrisengelsma/almanac-converter) - Simple conversion between different calendar systems. - [iCal4j](https://github.com/ical4j/ical4j) - Parse and build iCalendar [RFC 5545](https://tools.ietf.org/html/rfc5545) data models. +- [Jollyday](https://github.com/svendiedrichsen/jollyday) - Determines the holidays for a given year, country/name and eventually state/region. - [ThreeTen-Extra](https://github.com/ThreeTen/threeten-extra) - Additional date-time classes that complement those in JDK 8. - [Time4J](https://github.com/MenoData/Time4J) - Advanced date and time library. (LGPL-2.1-only) +### Decentralization + +_Libraries that handle decentralization tasks._ + +- [java-tron](https://github.com/tronprotocol/java-tron) Implementation of the Tron Protocol, whic utilizes blockchains to develop decentralized applications. + ### Dependency Injection _Libraries that help to realize the [Inversion of Control](https://en.wikipedia.org/wiki/Inversion_of_control) paradigm._ - [Apache DeltaSpike](https://deltaspike.apache.org) - CDI extension framework. +- [Avaje Inject](https://avaje.io/inject/) - Microservice-focused compile-time injection framework without reflection. - [Dagger](https://dagger.dev/) - Compile-time injection framework without reflection. - [Feather](https://github.com/zsoltherpai/feather) - Ultra-lightweight, JSR-330-compliant dependency injection library. - [Governator](https://github.com/Netflix/governator) - Extensions and utilities that enhance Google Guice. - [Guice](https://github.com/google/guice) - Lightweight and opinionated framework that completes Dagger. -- [HK2](https://javaee.github.io/hk2/) - Lightweight and dynamic dependency injection framework. +- [HK2](https://eclipse-ee4j.github.io/glassfish-hk2/) - Lightweight and dynamic dependency injection framework. - [JayWire](https://github.com/vanillasource/jaywire) - Lightweight dependency injection framework. (LGPL-3.0-only) ### Development @@ -327,7 +400,7 @@ _Augmentation of the development process at a fundamental level._ - [Manifold](https://github.com/manifold-systems/manifold) - Re-energizes Java with powerful features like type-safe metaprogramming, structural typing and extension methods. - [NoException](https://noexception.machinezoo.com) - Allows checked exceptions in functional interfaces and converts exceptions to Optional return. - [SneakyThrow](https://github.com/rainerhahnekamp/sneakythrow) - Ignores checked exceptions without bytecode manipulation. Can also be used inside Java 8 stream operations. -- [Tail](https://kag0.github.io/tail) - Enable infinite recursion using tail call optimization. +- [Tail](https://nrktkt.github.io/tail/) - Enable infinite recursion using tail call optimization. ### Distributed Applications @@ -344,6 +417,7 @@ _Libraries and frameworks for writing distributed and fault-tolerant application - [JGroups](http://www.jgroups.org) - Toolkit for reliable messaging and cluster creation. - [Quasar](http://docs.paralleluniverse.co/quasar/) - Lightweight threads and actors for the JVM. - [resilience4j](https://github.com/resilience4j/resilience4j) - Functional fault tolerance library. +- [OpenIG](https://github.com/OpenIdentityPlatform/OpenIG) - High-performance reverse proxy server with specialized session management and credential replay functionality. - [ScaleCube Services](https://github.com/scalecube/scalecube-services) - Embeddable Cluster-Membership library based on SWIM and gossip protocol. - [Zuul](https://github.com/Netflix/zuul) - Gateway service that provides dynamic routing, monitoring, resiliency, security, and more. @@ -365,10 +439,11 @@ _Tools that handle the distribution of applications in native formats._ - [Capsule](https://github.com/puniverse/capsule) - Simple and powerful packaging and deployment. A fat JAR on steroids, or a "Docker for Java" that supports JVM-optimized containers. - [Central Repository](https://search.maven.org) - Largest binary component repository available as a free service to the open-source community. Default used by Apache Maven, and available in all other build tools. - [Cloudsmith ![c]](https://cloudsmith.io) - Fully managed package management SaaS with support for Maven/Gradle/SBT with a free tier. -- [Getdown](https://github.com/threerings/getdown) - A system for deploying Java applications to end-user computers and keeping them up to date. Developed as an alternative to Java Web Start. +- [Getdown](https://github.com/threerings/getdown) - System for deploying Java applications to end-user computers and keeping them up to date. Developed as an alternative to Java Web Start. - [IzPack](http://izpack.org) - Setup authoring tool for cross-platform deployments. -- [JavaPackager](https://github.com/fvarrui/JavaPackager) - Maven and Gradle plugin which provides an easy way to package Java applications in native Windows, Mac OS X or GNU/Linux executables, and generate installers for them. -- [jlink.online](https://github.com/cilki/jlink.online) - Builds optimized runtimes over HTTP. +- [JavaPackager](https://github.com/fvarrui/JavaPackager) - Maven and Gradle plugin which provides an easy way to package Java applications in native Windows, macOS or GNU/Linux executables, and generate installers for them. +- [jDeploy](https://www.jdeploy.com) - Deploy desktop apps as native Mac, Windows or Linux bundles. +- [jlink.online](https://github.com/AdoptOpenJDK/jlink.online) - Builds optimized runtimes over HTTP. - [Nexus ![c]](https://www.sonatype.com) - Binary management with proxy and caching capabilities. - [packr](https://github.com/libgdx/packr) - Packs JARs, assets and the JVM for native distribution on Windows, Linux and macOS. - [really-executable-jars-maven-plugin](https://github.com/brianm/really-executable-jars-maven-plugin) - Maven plugin for making self-executing JARs. @@ -387,6 +462,7 @@ _Libraries that assist with processing office document formats._ _Libraries related to the financial domain._ +- [Cassandre](https://github.com/cassandre-tech/cassandre-trading-bot) - Trading bot framework. - [Parity](https://github.com/paritytrading/parity) - Platform for trading venues. - [Philadelphia](https://github.com/paritytrading/philadelphia) - Low-latency financial information exchange. - [Square](https://github.com/square/connect-java-sdk) - Integration with the Square API. @@ -414,6 +490,7 @@ _Libraries that facilitate functional programming._ - [Fugue](https://bitbucket.org/atlassian/fugue) - Functional extensions to Guava. - [Functional Java](http://www.functionaljava.org) - Implements numerous basic and advanced programming abstractions that assist composition-oriented development. - [jOOλ](https://github.com/jOOQ/jOOL) - Extension to Java 8 that aims to fix gaps in lambda by providing numerous missing types and a rich set of sequential Stream API additions. +- [Packrat](https://github.com/jhspetersson/packrat) - Gatherers library for Java Stream API. Gatherers can enhance streams with custom intermediate operations. - [protonpack](https://github.com/poetix/protonpack) - Collection of stream utilities. - [StreamEx](https://github.com/amaembo/streamex) - Enhances Java 8 Streams. - [Vavr](https://www.vavr.io) - Functional component library that provides persistent data types and functional control structures. @@ -429,12 +506,15 @@ _Frameworks that support the development of games._ - [Litiengine](https://litiengine.com/) - AWT-based, lightweight 2D game engine. - [LWJGL](https://www.lwjgl.org) - Robust framework that abstracts libraries like OpenGL/CL/AL. - [Mini2Dx](https://mini2dx.org) - Beginner-friendly, master-ready framework for rapidly prototyping and building 2D games. +- [Void2D](https://github.com/xzripper/Void2D) - High-level 2D game engine with built-in physics based on Swing. +- [vulkan4j](https://github.com/chuigda/vulkan4j) - Vulkan, OpenGL ES2 and GLFW Memory Allocator bindings. ### Geospatial _Libraries for working with geospatial data and algorithms._ - [Apache SIS](https://sis.apache.org) - Library for developing geospatial applications. +- [ArcGIS Maps SDK for Java ![c]](https://github.com/Esri/arcgis-maps-sdk-java-samples/) - JavaFX library for adding mapping and GIS functionality to desktop apps. - [Geo](https://github.com/davidmoten/geo) - GeoHash utilities in Java. - [GeoTools](https://geotools.org) - Library that provides tools for geospatial data. (LGPL-2.1-only) - [GraphHopper](https://github.com/graphhopper/graphhopper) - Road-routing engine. Used as a Java library or standalone web service. @@ -449,6 +529,8 @@ _Libraries to create modern graphical user interfaces._ - [JavaFX](https://wiki.openjdk.java.net/display/OpenJFX/Main) - Successor of Swing. - [Scene Builder](https://gluonhq.com/products/scene-builder/) - Visual layout tool for JavaFX applications. +- [SnapKit](https://github.com/reportmill/SnapKit) - Modern Java UI library for both desktop and web. +- [Sierra](https://github.com/HTTP-RPC/Sierra) - Lightwieght declarative DSL for rapid development of Swing applications. - [SWT](https://www.eclipse.org/swt/) - Graphical widget toolkit. ### High Performance @@ -467,14 +549,14 @@ _Everything about high-performance computation, from collections to specific lib _Libraries that assist with creating HTTP requests and/or binding responses._ -- [Apache HttpComponents](https://hc.apache.org/) - A toolset of low level Java components focused on HTTP and associated protocols. +- [Apache HttpComponents](https://hc.apache.org/) - Toolset of low-level Java components focused on HTTP and associated protocols. - [Async Http Client](https://github.com/AsyncHttpClient/async-http-client) - Asynchronous HTTP and WebSocket client library. +- [Avaje Http Client](https://avaje.io/http-client) - Wrapper on JDK 11's HttpClient that adds Feign-like interface among other enhancements. - [Feign](https://github.com/OpenFeign/feign) - HTTP client binder inspired by Retrofit, JAXRS-2.0, and WebSocket. - [Google HTTP Client](https://github.com/googleapis/google-http-java-client) - Pluggable HTTP transport abstraction with support for java.net.HttpURLConnection, Apache HTTP Client, Android, Google App Engine, XML, Gson, Jackson and Protobuf. - [methanol](https://github.com/mizosoft/methanol) - HTTP client extensions library. -- [restQL-java](https://github.com/b2wdigital/restQL-java) - Microservice query language that fetches information from multiple services. - [Retrofit](https://square.github.io/retrofit/) - Typesafe REST client. -- [Ribbon](https://github.com/Netflix/ribbon) - Client-side IPC library that is battle-tested in cloud. +- [Ribbon](https://github.com/Netflix/ribbon) - Client-side IPC library that is battle-tested in the cloud. - [Riptide](https://github.com/zalando/riptide) - Client-side response routing for Spring's RestTemplate. - [unirest-java](https://github.com/Kong/unirest-java) - Simplified, lightweight HTTP client library. @@ -485,6 +567,7 @@ _Libraries that handle serialization to hypermedia types._ - [hate](https://github.com/blackdoor/hate) - Builds hypermedia-friendly objects according to HAL specification. - [JSON-LD](https://github.com/jsonld-java/jsonld-java) - JSON-LD implementation. - [Siren4J](https://github.com/eserating-chwy/siren4j) - Library for the Siren specification. +- [Spring HATEOAS](https://github.com/spring-projects/spring-hateoas) - Standalone and Spring support for building hypermedia-based APIs using HAL, HAL FORMS, Collection+JSON, ALPS and UBER. ### IDE @@ -494,18 +577,22 @@ _Integrated development environments that try to simplify several aspects of dev - [IntelliJ IDEA ![c]](https://www.jetbrains.com/idea/) - Supports many JVM languages and provides good options for Android development. The commercial edition targets the enterprise sector. - [jGRASP](https://www.jgrasp.org) - Created to provide software visualizations that work in conjunction with the debugger such as Control Structure Diagrams, UML class diagrams and Object Viewer. - [NetBeans](https://netbeans.apache.org) - Provides integration for several Java SE and EE features, from database access to HTML5. +- [SnapCode](https://reportmill.com/SnapCode/) - Modern IDE for Java running in the browser, focused on education. - [Visual Studio Code](https://code.visualstudio.com/docs/languages/java) - Provides Java support for lightweight projects with a simple, modern workflow by using extensions from the internal marketplace. ### Imagery _Libraries that assist with the creation, evaluation or manipulation of graphical images._ +- [Barcode-Lib4J](https://github.com/vws-java/Barcode-Lib4J) - Generates QR Code, DataMatrix, and other 1D/2D barcodes as vector (PDF, EPS, SVG) and raster (PNG, BMP, JPG) images with DPI awareness, high precision, and CMYK color model support. - [Imgscalr](https://github.com/rkalla/imgscalr) - Simple, efficient and hardware-accelerated image-scaling library implemented in pure Java 2D. - [Tess4J](https://github.com/nguyenq/tess4j) - JNA wrapper for Tesseract OCR API. - [Thumbnailator](https://github.com/coobird/thumbnailator) - High-quality thumbnail generation library. - [TwelveMonkeys](https://github.com/haraldk/TwelveMonkeys) - Collection of plugins that extend the number of supported image file formats. - [ZXing](https://github.com/zxing/zxing) - Multi-format 1D/2D barcode image processing library. -- [image-comparison](https://github.com/romankh3/image-comparison) - Library that compares 2 images with the same sizes and shows the differences visually by drawing rectangles. Some parts of the image can be excluded from the comparison. Can be used for automation qa tests. +- [image-comparison](https://github.com/romankh3/image-comparison) - Library that compares 2 images with the same sizes and shows the differences visually by drawing rectangles. Some parts of the image can be excluded from the comparison. +- [vips-ffm](https://github.com/lopcode/vips-ffm) - Comprehensive bindings for libvips, using Java's "Foreign Function & Memory" API. +- [scrimage](https://sksamuel.github.io/scrimage) - Immutable, functional, and performant JVM library for manipulation of images. ### Introspection @@ -534,6 +621,7 @@ _Libraries for scheduling background jobs._ _Libraries for serializing and deserializing JSON to and from Java objects._ +- [Avaje Jsonb](https://avaje.io/jsonb/) - Reflection-free Json binding via source code generation with Jackson-like annotations. - [DSL-JSON](https://github.com/ngs-doo/dsl-json) - JSON library with advanced compile time databinding. - [Genson](http://genson.io) - Powerful and easy-to-use Java-to-JSON conversion library. - [Gson](https://github.com/google/gson) - Serializes objects to JSON and vice versa. Good performance with on-the-fly usage. @@ -541,7 +629,7 @@ _Libraries for serializing and deserializing JSON to and from Java objects._ - [jackson-modules-java8](https://github.com/FasterXML/jackson-modules-java8) - Set of Jackson modules for Java 8 datatypes and features. - [Jackson-datatype-money](https://github.com/zalando/jackson-datatype-money) - Open-source Jackson module to support JSON serialization and deserialization of JavaMoney data types. - [Jackson](https://github.com/FasterXML/jackson) - Similar to GSON, but offers performance gains if you need to instantiate the library more often. -- [JSON-io](https://github.com/jdereg/json-io) - Convert Java to JSON. Convert JSON to Java. Pretty print JSON. Java JSON serializer. +- [JSON-io](https://github.com/jdereg/json-io) - Convert Java to JSON/TOON and back. Supports complex object graphs, cyclic references, and TOON format for 40-50% LLM token savings. - [jsoniter](http://jsoniter.com) - Fast and flexible library with iterator and lazy parsing API. - [LoganSquare](https://github.com/bluelinelabs/LoganSquare) - JSON parsing and serializing library based on Jackson's streaming API. Outperforms GSON & Jackson's library. - [Moshi](https://github.com/square/moshi) - Modern JSON library, less opinionated and uses built-in types like List and Map. @@ -555,8 +643,8 @@ _Libraries for serializing and deserializing JSON to and from Java objects._ _Current implementations of the JVM/JDK._ +- [Which JDK](https://whichjdk.com/) - Overview of common JVMs with pros and cons. - [Adopt Open JDK](https://adoptopenjdk.net) - Community-driven OpenJDK builds, including both HotSpot and OpenJ9. -- [Avian](https://github.com/ReadyTalk/avian) - JVM with JIT, AOT modes and iOS port. - [Corretto](https://aws.amazon.com/corretto/) - No-cost, multiplatform, production-ready distribution of OpenJDK by Amazon. (GPL-2.0-only WITH Classpath-exception-2.0) - [Dragonwell8](https://github.com/alibaba/dragonwell8) - Downstream version of OpenJDK optimized for online e-commerce, financial, logistics applications. - [Graal](https://github.com/oracle/graal) - Polyglot embeddable JVM. (GPL-2.0-only WITH Classpath-exception-2.0) @@ -567,12 +655,14 @@ _Current implementations of the JVM/JDK._ - [RedHat Open JDK](https://developers.redhat.com/products/openjdk/overview) - RedHat's OpenJDK distribution. (GPL-2.0-only WITH Classpath-exception-2.0) - [SAP Machine](https://sap.github.io/SapMachine/) - SAP's no-cost, rigorously tested and JCK-verified OpenJDK friendly fork. (GPL-2.0-only WITH Classpath-exception-2.0) - [Zulu](https://www.azul.com/products/zulu-community/) - OpenJDK builds for Windows, Linux, and macOS. (GPL-2.0-only WITH Classpath-exception-2.0) +- [Microsoft JDK](https://github.com/microsoft/openjdk) - Microsoft Build of OpenJDK, Free, Open Source, Freshly Brewed! ### Logging _Libraries that log the behavior of an application._ - [Apache Log4j 2](https://logging.apache.org/log4j/) - Complete rewrite with a powerful plugin and configuration architecture. +- [Echopraxia](https://github.com/tersesystems/echopraxia) - API designed around structured logging, rich context, and conditional logging. There are Logback and Log4J2 implementations, but Echopraxia's API is completely dependency-free, meaning it can be implemented with any logging API. - [Graylog](https://www.graylog.org) - Open-source aggregator suited for extended role and permission management. (GPL-3.0-only) - [Kibana](https://www.elastic.co/kibana) - Analyzes and visualizes log files. Some features require payment. - [Logback](http://logback.qos.ch) - Robust logging library with interesting configuration options via Groovy. @@ -582,6 +672,7 @@ _Libraries that log the behavior of an application._ - [SLF4J](http://www.slf4j.org) - Abstraction layer/simple logging facade. - [tinylog](https://tinylog.org/v2/) - Lightweight logging framework with static logger class. - [OpenTracing Toolbox](https://github.com/zalando/opentracing-toolbox) - Collection of libraries that build on top of OpenTracing and provide extensions and plugins to existing instrumentations. +- [Flogger](https://google.github.io/flogger/) - Flogger is a fluent logging API for Java. It supports a wide variety of features, and has many benefits over existing logging APIs. ### Machine Learning @@ -593,7 +684,10 @@ _Tools that provide specific statistical algorithms for learning from data._ - [Deeplearning4j](https://deeplearning4j.org) - Distributed and multi-threaded deep learning library. - [DJL](https://djl.ai) - High-level and engine-agnostic framework for deep learning. - [H2O ![c]](https://www.h2o.ai) - Analytics engine for statistics over big data. +- [Intelligent java](https://github.com/Barqawiz/IntelliJava) - Seamlessly integrate with remote deep learning and language models programmatically. - [JSAT](https://github.com/EdwardRaff/JSAT) - Algorithms for pre-processing, classification, regression, and clustering with support for multi-threaded execution. (GPL-3.0-only) +- [m2cgen](https://github.com/BayesWitnesses/m2cgen) - CLI tool to transpile models into native code. +- [Neureka](https://github.com/Gleethos/neureka) - A lightweight, platform independent, OpenCL accelerated nd-array/tensor library. - [oj! Algorithms](https://www.ojalgo.org/) - High-performance mathematics, linear algebra and optimisation needed for data science, machine learning and scientific computing. - [Oryx 2](https://github.com/OryxProject/oryx) - Framework for building real-time, large-scale machine learning applications. Includes end-to-end applications for collaborative filtering, classification, regression, and clustering. - [Siddhi](https://github.com/siddhi-io/siddhi) - Cloud native streaming and complex event processing engine. @@ -612,6 +706,8 @@ _Tools that help send messages between clients to ensure protocol independency._ - [Apache Pulsar](https://pulsar.apache.org) - Distributed pub/sub-messaging system. - [Apache RocketMQ](https://rocketmq.apache.org) - Fast, reliable, and scalable distributed messaging platform. - [Apache Qpid](https://qpid.apache.org) - Apache Qpid makes messaging tools that speak AMQP and support many languages and platforms. +- [AutoMQ](https://github.com/AutoMQ/automq-for-kafka) - AutoMQ is a cloud-native, serverless reinvented Kafka that is easily scalable, manage-less and cost-effective. +- [Emissary](https://github.com/joel-jeremy/emissary) - Simple, lightweight, yet FAST messaging library for decoupling messages (requests and events) and message handlers. - [EventBus](https://github.com/greenrobot/EventBus) - Simple publish/subscribe event bus. - [Hermes](http://hermes.allegro.tech) - Fast and reliable message broker built on top of Kafka. - [JeroMQ](https://github.com/zeromq/jeromq) - Implementation of ZeroMQ. @@ -625,13 +721,16 @@ _Tools that help send messages between clients to ensure protocol independency._ _Tools for creating and managing microservices._ - [ActiveRPC](https://rpc.activej.io) - Lightweight and fast library for complex high-load distributed applications and Memcached-like solutions. -- [Apollo](https://spotify.github.io/apollo/) - Libraries for writing composable microservices. - [Armeria](https://github.com/line/armeria) - Asynchronous RPC/REST client/server library built on top of Java 8, Netty, HTTP/2, Thrift and gRPC. - [consul-api](https://github.com/Ecwid/consul-api) - Client for the Consul API: a distributed, highly available and datacenter-aware registry/discovery service. - [Eureka](https://github.com/Netflix/eureka) - REST-based service registry for resilient load balancing and failover. - [Helidon](https://helidon.io) - Two-style approach for writing microservices: Functional-reactive and as an implementation of MicroProfile. +- [JDA](https://github.com/DV8FromTheWorld/JDA) - Wrapping of the Discord REST API and its WebSocket events. +- [KeenType](https://github.com/DaveJarvis/KeenType) - Modernized version of a Java-based implementation of the New Typesetting System, which was heavily based on Donald E. Knuth's original TeX. +- [kubernetes-client](https://github.com/fabric8io/kubernetes-client) - Client provides access to the full Kubernetes & OpenShift REST APIs via a fluent DSL. - [Micronaut](https://micronaut.io) - Modern full-stack framework with focus on modularity, minimal memory footprint and startup time. - [Nacos](https://nacos.io) - Dynamic service discovery, configuration and service management platform for building cloud native applications. +- [OpenAI-Java](https://github.com/TheoKanning/openai-java) - Java libraries for using OpenAI's GPT-3 API. - [Quarkus](https://quarkus.io) - Kubernetes stack tailored for the HotSpot and Graal VM. - [Sentinel](https://github.com/alibaba/Sentinel) - Flow control component enabling reliability, resilience and monitoring for microservices. @@ -643,27 +742,37 @@ _Everything else._ - [Design Patterns](https://github.com/iluwatar/java-design-patterns) - Implementation and explanation of the most common design patterns. - [FF4J](https://github.com/ff4j/ff4j) - Feature Flags for Java. - [FizzBuzz Enterprise Edition](https://github.com/EnterpriseQualityCoding/FizzBuzzEnterpriseEdition) - No-nonsense implementation of FizzBuzz made by serious businessmen for serious business purposes. (No explicit license) +- [IP2Location.io Java SDK](https://github.com/ip2location/ip2location-io-java) - Wrapper for the IP2Location.io Geolocation API and the IP2WHOIS domain WHOIS API. +- [ISBN core](https://github.com/ladutsko/isbn-core) - A small library that contains a representation object of ISBN-10 and ISBN-13 and tools to parse, validate and format one. - [J2ObjC](https://github.com/google/j2objc) - Java-to-Objective-C translator for porting Android libraries to iOS. - [JBake](https://jbake.org) - Static website generator. +- [JBang](https://www.jbang.dev/) - JBang makes it easy to use Java for scripting. It lets you use a single file for code and dependency management and allows you to run it directly. - [JBot](https://github.com/rampatra/jbot) - Framework for building chatbots. (GPL-3.0-only) - [JCuda](http://jcuda.org) - JCuda offers Java bindings for CUDA and CUDA-related libraries. +- [JEmoji](https://github.com/felldo/JEmoji) - An auto-generated emoji library that provides type-safe direct access to emojis and alias support for Discord, Slack, GitHub and many more features. - [Jimfs](https://github.com/google/jimfs) - In-memory file system. +- [JObfuscator![c]](https://www.pelock.com/products/jobfuscator) - Source code obfuscator. - [Joda-Money](https://www.joda.org/joda-money/) - Basic currency and money classes and algorithms not provided by the JDK. +- [jOOX](https://github.com/jooq/joox) - Simple wrapper for the org.w3c.dom package, to allow for fluent XML document creation and manipulation with an API inspired by jQuery. - [JPad](http://jpad.io) - Snippet runner. - [jsweet](https://github.com/cincheo/jsweet) - Source transpiler to TypeScript/JavaScript. - [Maven Wrapper](https://github.com/takari/maven-wrapper) - Analogue of Gradle Wrapper for Maven, allows building projects without installing maven. - [Membrane Service Proxy](https://github.com/membrane/service-proxy) - Open-source, reverse-proxy framework. - [MinimalFTP](https://github.com/Guichaguri/MinimalFTP) - Lightweight, small and customizable FTP server. +- [LittleProxy](https://github.com/adamfisk/LittleProxy) - High performance HTTP proxy atop Netty's event-based networking library. - [Modern Java - A Guide to Java 8](https://github.com/winterbe/java8-tutorial) - Popular Java 8 guide. - [Modernizer](https://github.com/gaul/modernizer-maven-plugin) - Detect uses of legacy Java APIs. - [OctoLinker](https://github.com/OctoLinker/OctoLinker) - Browser extension which allows to navigate through code on GitHub more efficiently. - [OpenRefine](http://openrefine.org) - Tool for working with messy data: cleaning, transforming, extending it with web services and linking it to databases. - [PipelinR](https://github.com/sizovs/pipelinr) - Small utility library for using handlers and commands with pipelines. - [Polyglot for Maven](https://github.com/takari/polyglot-maven) - Extensions for Maven 3.3.1+ that allows writing the POM model in dialects other than XML. +- [RR4J](https://github.com/Kartikvk1996/RR4J) - RR4J is a tool that records java bytecode execution and later allows developers to replay locally. - [Simple Java Mail](https://github.com/bbottema/simple-java-mail) - Mailing with a clean and fluent API. - [Smooks](https://github.com/smooks/smooks) - Framework for fragment-based message processing. (Apache-2.0 OR LGPL-3.0-or-later) +- [Svix](https://github.com/svix/svix-webhooks/tree/main/java) - Library for the Svix API to send webhooks and verify signatures. - [Togglz](https://www.togglz.org) - Implementation of the Feature Toggles pattern. - [TypeTools](https://github.com/jhalterman/typetools) - Tools for resolving generic types. +- [webcam-capture](https://github.com/sarxos/webcam-capture) - Library for using built-in and external webcams directly in Java. - [XMLBeam](https://github.com/SvenEwald/xmlbeam) - Processes XML by using annotations or XPath within code. - [yGuard](https://github.com/yWorks/yGuard) - Obfuscation via renaming and shrinking. @@ -677,22 +786,30 @@ _Tools for creating or managing mobile applications._ ### Monitoring -_Tools that monitor applications in production._ +_Tools that observe/monitor applications in production by providing telemetry._ +- [Apitally](https://github.com/apitally/apitally-java) - Simple, privacy-focused API monitoring, analytics and request logging for Spring Boot apps. - [Automon](https://github.com/stevensouza/automon) - Combines the power of AOP with monitoring and/or logging tools. +- [Boot Usage Spring Boot Starter](https://github.com/dhruv-15-03/boot-usage) - Spring Boot Actuator extension providing application startup and runtime metrics including JVM uptime, memory usage, and CPU load. +- [Datadog ![c]](https://github.com/DataDog/dd-trace-java) - Modern monitoring & analytics. +- [Dropwizard Metrics](https://github.com/dropwizard/metrics) - Expose metrics via JMX or HTTP and send them to a database. - [Failsafe Actuator](https://github.com/zalando/failsafe-actuator) - Out of the box monitoring of Failsafe Circuit Breaker in Spring-Boot environment. - [Glowroot](https://glowroot.org) - Open-source Java APM. +- [HertzBeat](https://github.com/dromara/hertzbeat) - Real-time monitoring system with custom-monitor and agentless. +- [hippo4j](https://github.com/opengoofy/hippo4j/blob/develop/README-EN.md) - Dynamic and observable thread pool framework. - [inspectIT](https://www.inspectit.rocks) - Captures detailed run-time information via hooks that can be changed on the fly. It supports tracing over multiple systems via the OpenTracing API and can correlate the data with end user monitoring. - [Instrumental ![c]](https://instrumentalapp.com) - Real-time Java application performance monitoring. A commercial service with free development accounts. -- [JavaMelody](https://github.com/javamelody/javamelody) - Performance monitoring and profiling. - [Jaeger client](https://github.com/jaegertracing/jaeger-client-java) - Jaeger client. +- [JavaMelody](https://github.com/javamelody/javamelody) - Performance monitoring and profiling. - [jmxtrans](https://github.com/jmxtrans/jmxtrans) - Connect to multiple JVMs and query them for their attributes via JMX. Its query language is based on JSON, which allows non-Java programmers to access the JVM attributes. Supports different output writes, including Graphite, Ganglia, and StatsD. - [Jolokia](https://jolokia.org) - JMX over REST. -- [Metrics](https://github.com/dropwizard/metrics) - Expose metrics via JMX or HTTP and send them to a database. -- [Datadog ![c]](https://github.com/DataDog/dd-trace-java) - Modern monitoring & analytics. +- [Micrometer](https://github.com/micrometer-metrics/micrometer) - Vendor-neutral metrics/observability facade for the most popular metrics/observability libraries. +- [Micrometer Tracing](https://github.com/micrometer-metrics/tracing) - Vendor-neutral distributed tracing facade for the most popular tracer libraries. - [nudge4j](https://github.com/lorenzoongithub/nudge4j) - Remote developer console from the browser for Java 8 via bytecode injection. +- [OpenTelemetry](https://github.com/open-telemetry/opentelemetry-java) - Instrument, generate, collect, and export telemetry data to help you analyze your software’s performance and behavior. - [Pinpoint](https://github.com/naver/pinpoint) - Open-source APM tool. - [Prometheus](https://github.com/prometheus/client_java) - Provides a multi-dimensional data model, DSL, autonomous server nodes and much more. +- [Sentry ![c]](https://github.com/getsentry/sentry-java) - Integration with [Sentry](https://github.com/getsentry/sentry), an application error tracking and performance analysis platform. - [SPM ![c]](https://github.com/sematext/sematext-agent-java) - Performance monitor with distributing transaction tracing for JVM apps. - [Stagemonitor](https://github.com/stagemonitor/stagemonitor) - Open-source performance monitoring and transaction tracing for JVM apps. - [Sysmon](https://github.com/palantir/Sysmon) - Lightweight platform monitoring tool for Java VMs. @@ -706,6 +823,7 @@ _For working with platform-specific native libraries._ - [JavaCPP](https://github.com/bytedeco/javacpp) - Provides efficient and easy access to native C++. - [JNA](https://github.com/java-native-access/jna) - Work with native libraries without writing JNI. Also provides interfaces to common system libraries. - [JNR](https://github.com/jnr/jnr-ffi) - Work with native libraries without writing JNI. Also provides interfaces to common system libraries. Same goals as JNA, but faster, and serves as the basis for the upcoming [Project Panama](http://openjdk.java.net/projects/panama). +- [native-lib-loader](https://github.com/scijava/native-lib-loader) - Native library loader for extracting and loading native libraries from Java. ### Natural Language Processing @@ -714,6 +832,7 @@ _Libraries that specialize in processing text._ - [CogCompNLP](https://github.com/CogComp/cogcomp-nlp) - Provides common annotators for plain text input. (Research and Academic Use License) - [CoreNLP](https://nlp.stanford.edu/software/corenlp.shtml) - Provides a set of fundamental tools for tasks like tagging, named entity recognition, and sentiment analysis. (GPL-3.0-or-later) - [DKPro](https://dkpro.github.io) - Collection of reusable NLP tools for linguistic pre-processing, machine learning, lexical resources, etc. +- [Hypherator](https://github.com/ejossev/hypherator-java) - Java hyphenation library with iterator-like interface. Can be used out-of-the box - dictionaries for multiple languages are bundled in. - [LingPipe](http://alias-i.com/lingpipe/) - Toolkit for tasks ranging from POS tagging to sentiment analysis. ### Networking @@ -724,7 +843,7 @@ _Libraries for building network servers._ - [Comsat](https://github.com/puniverse/comsat) - Integrates standard Java web-related APIs with Quasar fibers and actors. - [Dubbo](https://github.com/apache/dubbo) - High-performance RPC framework. - [Grizzly](https://javaee.github.io/grizzly/) - NIO framework. Used as a network layer in Glassfish. -- [gRPC](https://github.com/grpc/grpc-java) - RPC framework based on protobuf and HTTP/2. +- [gRPC-java](https://github.com/grpc/grpc-java) - RPC framework based on protobuf and HTTP/2. - [KryoNet](https://github.com/EsotericSoftware/kryonet) - Provides a clean and simple API for efficient TCP and UDP client/server network communication using NIO and Kryo. - [MINA](https://mina.apache.org) - Abstract, event-driven async I/O API for network operations over TCP/IP and UDP/IP via Java NIO. - [Netty](https://netty.io) - Framework for building high-performance network applications. @@ -734,6 +853,7 @@ _Libraries for building network servers._ - [TLS Channel](https://github.com/marianobarrios/tls-channel) - Implements a ByteChannel interface over SSLEngine, enabling easy-to-use (socket-like) TLS. - [Undertow](http://undertow.io) - Web server providing both blocking and non-blocking APIs based on NIO. Used as a network layer in WildFly. (LGPL-2.1-only) - [urnlib](https://github.com/slub/urnlib) - Represent, parse and encode URNs, as in RFC 2141. (GPL-3.0-only) +- [Fluency](https://github.com/komamitsu/fluency) - High throughput data ingestion logger to Fluentd and Fluent Bit. ### ORM @@ -745,6 +865,7 @@ _APIs that handle the persistence of objects._ - [EclipseLink](https://www.eclipse.org/eclipselink/) - Supports a number of persistence standards: JPA, JAXB, JCA and SDO. - [Hibernate](http://hibernate.org/orm/) - Robust and widely used, with an active community. (LGPL-2.1-only) - [MyBatis](https://github.com/mybatis/mybatis-3) - Couples objects with stored procedures or SQL statements. +- [MyBatis-Plus](https://github.com/baomidou/mybatis-plus) - A powerful enhanced toolkit of MyBatis for simplifying development. - [ObjectiveSql](https://github.com/braisdom/ObjectiveSql) - ActiveRecord ORM for rapid development and convention over configuration. - [Permazen](https://github.com/permazen/permazen) - Language-natural persistence layer. - [SimpleFlatMapper](https://github.com/arnaudroger/SimpleFlatMapper) - Simple database and CSV mapper. @@ -760,19 +881,25 @@ _Java platform as a service._ - [Microsoft Azure ![c]](https://azure.microsoft.com/en-us/) - Microsoft's cloud infrastructure. - [OpenShift ![c]](https://www.openshift.com) - Provides additionally an on-premise solution. +### Pathfinding + +_Algorithms and libraries for finding routes in graphs and spatial environments._ + +- [Pathetic](https://github.com/bsommerfeld/pathetic) - A highly configurable 3D A\* pathfinding library that uses specific optimizations for high performance. + ### PDF _Tools to help with PDF files._ - [Apache FOP](https://xmlgraphics.apache.org/fop/) - Creates PDFs from XSL-FO. - [Apache PDFBox](https://pdfbox.apache.org) - Toolbox for creating and manipulating PDFs. -- [Dynamic Jasper](http://dynamicjasper.com) - Abstraction layer to JasperReports. (LGPL-3.0-only) +- [Dynamic Jasper](https://intive-fdv.github.io/DynamicJasper/) - Abstraction layer to JasperReports. (LGPL-3.0-only) - [DynamicReports](https://github.com/dynamicreports/dynamicreports) - Simplifies JasperReports. (LGPL-3.0-only) - [Eclipse BIRT](https://www.eclipse.org/birt) - Report engine for creating PDF and other formats (DOCX, XLSX, HTML, etc) using Eclipse-based visual editor. - [flyingsaucer](https://github.com/flyingsaucerproject/flyingsaucer) - XML/XHTML and CSS 2.1 renderer. (LGPL-2.1-or-later) - [iText ![c]](https://itextpdf.com/en) - Creates PDF files programmatically. - [JasperReports](https://community.jaspersoft.com/project/jasperreports-library) - Complex reporting engine. (LGPL-3.0-only) -- [Open HTML to PDF](https://github.com/danfickle/openhtmltopdf) - Properly supports modern PDF standards based on flyingsaucer and Apache PDFBox. +- [Open HTML to PDF](https://github.com/openhtmltopdf/openhtmltopdf) - Properly supports modern PDF standards based on flyingsaucer and Apache PDFBox. - [OpenPDF](https://github.com/LibrePDF/OpenPDF) - Open-source iText fork. (LGPL-3.0-only & MPL-2.0) - [Tabula](https://github.com/tabulapdf/tabula-java) - Extracts tables from PDF files. @@ -870,7 +997,7 @@ _Libraries for developing reactive applications._ - [Akka](https://akka.io) - Toolkit and runtime for building concurrent, distributed, fault-tolerant and event-driven applications. - [Reactive Streams](https://github.com/reactive-streams/reactive-streams-jvm) - Provides a standard for asynchronous stream processing with non-blocking backpressure. -- [Reactor](https://github.com/reactor/reactor-core) - Library for building reactive fast-data applications. +- [Reactor](https://github.com/reactor/reactor) - A framework for building non-blocking applications on the JVM, providing support for reactive programming. - [RxJava](https://github.com/ReactiveX/RxJava) - Allows for composing asynchronous and event-based programs using observable sequences. - [vert.x](https://vertx.io) - Polyglot event-driven application framework. @@ -891,6 +1018,7 @@ _Frameworks specifically for creating RESTful services._ - [Crnk](http://www.crnk.io) - Implementation of the JSON API specification to build resource-oriented REST endpoints with sorting, filtering, paging, linking, object graphs, type-safety, bulk updates, integrations and more. - [springdoc-openapi](https://github.com/springdoc/springdoc-openapi) - Automates the generation of API documentation using Spring Boot projects. - [Swagger](https://swagger.io) - Standard, language-agnostic interface to REST APIs. +- [openapi-generator](https://github.com/OpenAPITools/openapi-generator) - Allows generation of API client libraries, SDKs, server stubs, documentation and configuration automatically given an OpenAPI Spec. ### Science @@ -898,15 +1026,17 @@ _Libraries for scientific computing, analysis and visualization._ - [BioJava](https://biojava.org/) - Facilitates processing biological data by providing algorithms, file format parsers, sequencing and 3D visualization commonly used in bioinformatics. - [Chart-FX](https://github.com/GSI-CS-CO/chart-fx) - Scientific charting library with focus on performance optimised real-time data visualisation at 25 Hz update rates for large data sets. -- [DataMelt](https://jwork.org/dmelt/) - Environment for scientific computation, data analysis and data visualization. (GPL-3.0-or-later) +- [DataMelt](https://datamelt.org/) - Environment for scientific computation, data analysis and data visualization. (GPL-3.0-or-later) - [Erdos](https://github.com/Erdos-Graph-Framework/Erdos) - Modular, light and easy graph framework for theoretic algorithms. - [GraphStream](http://graphstream-project.org) - Library for modeling and analyzing dynamic graphs. - [JFreeChart](http://www.jfree.org/jfreechart/) - 2D chart library for Swing, JavaFX and server-side applications. (LGPL-2.1-only) - [JGraphT](https://github.com/jgrapht/jgrapht) - Graph library that provides mathematical graph-theory objects and algorithms. - [JGraphX](https://github.com/jgraph/jgraphx) - Library for visualizing (mainly Swing) and interacting with node-edge graphs. +- [jSciPy](https://github.com/hissain/jscipy) - jSciPy is a Java library designed for scientific computing, offering functionalities inspired by popular scientific computing libraries. It currently provides modules for signal processing, including Butterworth filters, peak finding algorithms, and an RK4 solver for ordinary differential equations. - [LogicNG](https://github.com/logic-ng/LogicNG) - Library for creating, manipulating and solving Boolean and Pseudo-Boolean formulas. - [Mines Java Toolkit](https://github.com/MinesJTK/jtk) - Library for geophysical scientific computation, visualization and digital signal analysis. - [Morpheus](https://github.com/zavtech/morpheus-core) - Provides a versatile two-dimensional memory efficient tabular data structure called a DataFrame to enable efficient in-memory analytics for scientific computing on the JVM. +- [Orekit](https://www.orekit.org/) - A low level space flight dynamics library providing basic elements (orbits, dates, attitude, frames...) and various algorithms (conversions, propagations, pointing...) to handle them. - [Orson-Charts](https://github.com/jfree/orson-charts) - Generates a wide variety of 3D charts that can be displayed with Swing and JavaFX or exported to PDF, SVG, PNG and JPEG. (GPL-3.0-only) - [Tablesaw](https://github.com/jtablesaw/tablesaw) - Includes a data-frame, an embedded column store, and hundreds of methods to transform, summarize, or filter data. - [XChart](https://github.com/knowm/XChart) - Light-weight library for plotting data. Many customizable chart types are available. @@ -925,23 +1055,28 @@ _Engines that index documents for search and analysis._ _Libraries that handle security, authentication, authorization or session management._ - [Apache Shiro](https://shiro.apache.org) - Performs authentication, authorization, cryptography and session management. +- [Ayza](https://github.com/Hakky54/ayza) - High-level SSL configuration builder for configuring HTTP clients and servers with SSL/TLS. - [Bouncy Castle](https://www.bouncycastle.org/java.html) - All-purpose cryptographic library and JCA provider offering a wide range of functions, from basic helpers to PGP/SMIME operations. +- [DependencyCheck](https://github.com/jeremylong/DependencyCheck) - Detects publicly disclosed vulnerabilities contained within a project's dependencies. - [Cryptomator](https://cryptomator.org) - Multiplatform, transparent, client-side encryption of files in the cloud. (GPL-3.0-only) - [Hdiv](https://github.com/hdiv/hdiv) - Runtime application that repels application security risks included in the OWASP Top 10, including SQL injection, cross-site scripting, cross-site request forgery, data tampering, and brute force attacks. - [jjwt](https://github.com/jwtk/jjwt) - JSON web token for Java and Android. +- [jwt-java](https://github.com/BastiaanJansen/jwt-java) - Easily create and parse JSON Web Tokens and create customized JWT validators using a fluent API. - [Jwks RSA](https://github.com/auth0/jwks-rsa-java) - JSON Web Key Set parser. - [Kalium](https://github.com/abstractj/kalium) - Binding for the Networking and Cryptography (NaCl) library. - [Keycloak](https://www.keycloak.org) - Integrated SSO and IDM for browser apps and RESTful web services. - [Keywhiz](https://github.com/square/keywhiz) - System for distributing and managing secrets. - [Nbvcxz](https://github.com/GoSimpleLLC/nbvcxz) - Advanced password strength estimation. - [OACC](http://oaccframework.org) - Provides permission-based authorization services. +- [OpenAM](https://github.com/OpenIdentityPlatform/OpenAM) - Access management solution that includes authentication, SSO, authorization, federation, entitlements and web services security. - [OTP-Java](https://github.com/BastiaanJansen/OTP-Java) - One-time password generator library according to RFC 4226 (HOTP) and RFC 6238 (TOTP). - [pac4j](https://github.com/pac4j/pac4j) - Security engine. +- [Passay](http://www.passay.org/) - Enforce password policy by validating candidate passwords against a configurable rule set. - [Password4j](https://github.com/Password4j/password4j) - User-friendly cryptographic library that supports Argon2, Bcrypt, Scrypt, PBKDF2 and various other cryptographic hash functions. - [SecurityBuilder](https://github.com/tersesystems/securitybuilder) - Fluent Builder API for JCA and JSSE classes and especially X.509 certificates. -- [SSLContext-Kickstart](https://github.com/Hakky54/sslcontext-kickstart) - High-level SSL context builder for configuring HTTP clients with SSL/TLS. - [Themis](https://github.com/cossacklabs/themis) - Multi-platform high-level cryptographic library provides easy-to-use encryption for protecting sensitive data: secure messaging with forward secrecy, secure data storage (AES256GCM); suits for building end-to-end encrypted applications. - [Tink](https://github.com/google/tink) - Provides a simple and misuse-proof API for common cryptographic tasks. +- [Topaz](https://www.topaz.sh) - Fine-grained authorization for applications with support for RBAC, ABAC, and ReBAC. ### Serialization @@ -949,6 +1084,7 @@ _Libraries that handle serialization with high efficiency._ - [FlatBuffers](https://github.com/google/flatbuffers) - Memory-efficient serialization library that can access serialized data without unpacking and parsing it. - [FST](https://github.com/RuedigerMoeller/fast-serialization) - JDK-compatible, high-performance object graph serialization. +- [Fury](https://github.com/alipay/fury) - Blazing fast object graph serialization framework powered by JIT and zero-copy. - [Kryo](https://github.com/EsotericSoftware/kryo) - Fast and efficient object graph serialization framework. - [MessagePack](https://github.com/msgpack/msgpack-java) - Efficient binary serialization format. - [PHP Serializer](https://github.com/marcospassos/java-php-serializer) - Serializing objects in the PHP serialization format. @@ -970,7 +1106,9 @@ _Tools that substitute expressions in a template._ - [Freemarker](https://freemarker.apache.org) - Library to generate text output (HTML web pages, e-mails, configuration files, source code, etc.) based on templates and changing data. - [Handlebars.java](https://jknack.github.io/handlebars.java/) - Logicless and semantic Mustache templates. - [Jade4J](https://github.com/neuland/jade4j) - Implementation of Pug (formerly known as Jade). -- [jte](https://github.com/casid/jte) - Compiles to classes and uses an easy syntax, several features to make development easier and provides fast execution and a small footprint. +- [Jamal](https://github.com/verhas/jamal) - Extendable template engine embedded into Maven/JavaDoc, supporting multiple extensions (Groovy, Ruby, JavaScript, JShell, PlantUml) with support for snippet handling. +- [jstachio](https://github.com/jstachio/jstachio) - Typesafe Mustache templating engine. +- [jte](https://github.com/casid/jte) - Compiles to classes, and uses an easy syntax, several features to make development easier and provides fast execution and a small footprint. - [Jtwig](https://github.com/jtwig/jtwig) - Modular, configurable and fully tested template engine. - [Pebble](https://pebbletemplates.io) - Inspired by Twig and separates itself with its inheritance feature and its easy-to-read syntax. It ships with built-in autoescaping for security and it includes integrated support for internationalization. - [Rocker](https://github.com/fizzed/rocker) - Optimized, memory efficient and speedy template engine producing statically typed, plain objects. @@ -987,10 +1125,11 @@ _Tools that simplify testing asynchronous services._ - [Awaitility](https://github.com/awaitility/awaitility) - DSL for synchronizing asynchronous operations. - [ConcurrentUnit](https://github.com/jhalterman/concurrentunit) - Toolkit for testing multi-threaded and asynchronous applications. -- [GreenMail](http://www.icegreen.com/greenmail/) - In-memory email server for integration testing. Supports SMTP, POP3 and IMAP including SSL. (GPL-2.0-only) +- [GreenMail](https://greenmail-mail-test.github.io/greenmail/) - In-memory email server for integration testing. Supports SMTP, POP3 and IMAP including SSL. (GPL-2.0-only) - [Hoverfly Java](https://github.com/SpectoLabs/hoverfly-java) - Native bindings for Hoverfly, a proxy which allows you to simulate HTTP services. - [Karate](https://github.com/intuit/karate) - DSL that combines API test-automation, mocks and performance-testing making testing REST/HTTP services easy. - [REST Assured](https://github.com/rest-assured/rest-assured) - DSL for easy testing of REST/HTTP services. +- [WebTau](https://github.com/testingisdocumenting/webtau) - Test across REST-API, Graph QL, Browser, Database, CLI and Business Logic with consistent set of matchers and concepts. #### BDD @@ -1008,25 +1147,34 @@ _Testing for the software development process that emerged from TDD and was heav _Everything related to the creation and handling of random data._ +- [AutoParams](https://github.com/AutoParams/AutoParams) - Supports generating test data or combining scenarios for parameterized tests. - [Beanmother](https://github.com/keepcosmos/beanmother) - Sets up beans from YAML fixtures. +- [Datafaker](https://github.com/datafaker-net/datafaker) - Modern fake data generator forked from Java Faker. - [Fixture Factory](https://github.com/six2six/fixture-factory) - Generates fake objects from a template. - [jFairy](https://github.com/Devskiller/jfairy) - Fake data generator. +- [Instancio](https://github.com/instancio/instancio) - Automates data setup in unit tests by generating fully-populated, reproducible objects. Includes JUnit 5 extension. - [Randomized Testing](https://github.com/randomizedtesting/randomizedtesting) - JUnit test runner and plugins for running JUnit tests with pseudo-randomness. - [Java Faker](https://github.com/DiUS/java-faker) - Port of Ruby's fake data generator. +- [Mockneat](https://github.com/nomemory/mockneat) - Another fake data generator. +- [JMock](https://github.com/xcancloud/JMock) - JMock is a high-performance data generation and simulation component library implemented in Java. #### Frameworks _Provide environments to run tests for a specific use case._ -- [ArchUnit](https://github.com/TNG/ArchUnit) - Test library for specifying and asserting architecture rules. - [Apache JMeter](http://jmeter.apache.org) - Functional testing and performance measurements. +- [JMeter DSL.java](https://abstracta.github.io/jmeter-java-dsl/) - Load tests with JMeter as simple as a JUnit test. - [Arquillian](http://arquillian.org) - Integration and functional testing platform for Java EE containers. +- [BitDive ![c]](https://bitdive.io) - Zero-code integration testing platform that generates tests from runtime application behavior. +- [cdi-test](https://github.com/guhilling/cdi-test) - JUnit extension for easy and efficient testing of CDI components. - [Citrus](https://citrusframework.org) - Integration testing framework that focuses on both client- and server-side messaging. - [Gatling](https://gatling.io) - Load testing tool designed for ease of use, maintainability and high performance. - [JUnit](https://junit.org/junit5/) - Common testing framework. - [jqwik](https://jqwik.net) - Engine for property-based testing built on JUnit 5. - [Pact JVM](https://github.com/DiUS/pact-jvm) - Consumer-driven contract testing. - [PIT](http://pitest.org) - Fast mutation-testing framework for evaluating fault-detection abilities of existing JUnit or TestNG test suites. +- [weld-testing](https://github.com/weld/weld-testing) - Set of test framework extensions (JUnit 4, JUnit 5, Spock) to enhance the testing of CDI components via Weld. Supports Weld 5. +- [selenium](https://github.com/SeleniumHQ/selenium) - Browser automation framework and ecosystem. #### Matchers @@ -1035,6 +1183,7 @@ _Libraries that provide custom matchers._ - [AssertJ](https://joel-costigliola.github.io/assertj/) - Fluent assertions that improve readability. - [Hamcrest](http://hamcrest.org/JavaHamcrest/) - Matchers that can be combined to create flexible expressions of intent. - [JSONAssert](http://jsonassert.skyscreamer.org) - Simplifies testing JSON strings. +- [JsonUnit](https://github.com/lukas-krecan/JsonUnit) - Library that simplifies JSON comparison in tests. - [Truth](https://truth.dev) - Google's fluent assertion and proposition framework. - [XMLUnit](https://github.com/xmlunit/xmlunit) - Simplifies testing for XML output. @@ -1042,12 +1191,17 @@ _Libraries that provide custom matchers._ _Other stuff related to testing._ +- [ConsoleCaptor](https://github.com/Hakky54/console-captor) - Captures console output for unit testing purposes. - [junit-dataprovider](https://github.com/TNG/junit-dataprovider) - TestNG-like data provider/runner for JUnit. +- [junit-pioneer](https://junit-pioneer.org/) - JUnit 5 extension pack, pushing the frontiers on Jupiter. - [LogCaptor](https://github.com/Hakky54/log-captor) - Captures log entries for unit testing purposes. +- [log-capture](https://github.com/dm-drogeriemarkt/log-capture) - Captures log entries and provides assertions for unit and integration testing. - [Mutability Detector](https://github.com/MutabilityDetector/MutabilityDetector) - Reports whether instances of a given class are immutable. -- [raml-tester](https://github.com/nidi3/raml-tester) - Tests if a request/response matches a given RAML definition. -- [TestContainers](https://github.com/testcontainers/testcontainers-java) - Provides throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container. - [pojo-tester](https://www.pojo.pl) - Automatically performs tests on basic POJO methods. (LGPL-3.0-only) +- [raml-tester](https://github.com/nidi3/raml-tester) - Tests if a request/response matches a given RAML definition. +- [Selfie](https://github.com/diffplug/selfie) - Snapshot testing (inline and on disk). +- [Stebz](https://github.com/stebz/stebz) - Multi-approach framework for test steps managing. +- [Testcontainers](https://github.com/testcontainers/testcontainers-java) - Provides throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container. #### Mocking @@ -1059,6 +1213,7 @@ _Tools which mock collaborators to help testing single, isolated units._ - [Moco](https://github.com/dreamhead/moco) - Concise web services for stubs and mocks. - [PowerMock](https://github.com/powermock/powermock) - Mocks static methods, constructors, final classes and methods, private methods, and removal of static initializers. - [WireMock](http://wiremock.org) - Stubs and mocks web services. +- [EasyMock](https://github.com/easymock/easymock) - EasyMock is a Java library that provides an easy way to use Mock Objects in unit testing. ### Utility @@ -1067,17 +1222,23 @@ _Libraries which provide general utility functions._ - [Arthas](https://github.com/alibaba/arthas) - Allows to troubleshoot production issues for applications without modifying code or restarting servers. - [bucket4j](https://github.com/vladimir-bukhtoyarov/bucket4j) - Rate limiting library based on token-bucket algorithm. - [cactoos](https://github.com/yegor256/cactoos) - Collection of object-oriented primitives. +- [Chocotea](https://github.com/cleopatra27/chocotea) - Generates postman collection, environment and integration tests from java code. - [CRaSH](http://www.crashub.org) - Provides a shell into a JVM that's running CRaSH. Used by Spring Boot and others. (LGPL-2.1-or-later) - [Dex](https://github.com/PatMartin/Dex) - Java/JavaFX tool capable of powerful ETL and data visualization. +- [dregex](https://github.com/marianobarrios/dregex) - Regular expression engine that uses deterministic finite automata. It supports some Perl-style features and yet retains linear matching time, and also offers set operations. - [Embulk](https://github.com/embulk/embulk) - Bulk data loader that helps data transfer between various databases, storages, file formats, and cloud services. - [fswatch](https://github.com/vorburger/ch.vorburger.fswatch) - Micro library to watch for directory file system changes, simplifying java.nio.file.WatchService. - [Gephi](https://github.com/gephi/gephi) - Cross-platform for visualizing and manipulating large graph networks. (GPL-3.0-only) - [Guava](https://github.com/google/guava) - Collections, caching, primitives support, concurrency libraries, common annotations, string processing, I/O, and more. -- [JADE](http://jade.tilab.com) - Framework and environment for building and debugging multi-agent systems. (LGPL-2.0-only) +- [JADE](https://jade.tilab.com) - Framework and environment for building and debugging multi-agent systems. (LGPL-2.0-only) +- [Javadoc Publisher](https://github.com/MathieuSoysal/Javadoc-publisher.yml) - Generate Javadoc from your maven/gradle project and deploy it automatically on GitHub Page. +- [Java Diff Utils](https://java-diff-utils.github.io/java-diff-utils/) - Utilities for text or data comparison and patching. - [JavaVerbalExpressions](https://github.com/VerbalExpressions/JavaVerbalExpressions) - Library that helps with constructing difficult regular expressions. - [JGit](https://www.eclipse.org/jgit/) - Lightweight, pure Java library implementing the Git version control system. +- [JKScope](https://github.com/evpl/jkscope) - Java scope functions inspired by Kotlin. - [minio-java](https://github.com/minio/minio-java) - Provides simple APIs to access any Amazon S3-compatible object storage server. - [Protégé](https://protege.stanford.edu) - Provides an ontology editor and a framework to build knowledge-based systems. +- [Semver4j](https://github.com/semver4j/semver4j) - Lightweight library that helps you handling semantic versioning with different modes. - [Underscore-java](https://github.com/javadev/underscore-java) - Port of Underscore.js functions. ### Version Managers @@ -1108,6 +1269,7 @@ _Frameworks that handle the communication between the layers of a web applicatio - [Blade](https://github.com/lets-blade/blade) - Lightweight, modular framework that aims to be elegant and simple. - [Bootique](https://bootique.io) - Minimally opinionated framework for runnable apps. - [Firefly](http://www.fireflysource.com) - Asynchronous framework for rapid development of high-performance web application. +- [Javalin](https://javalin.io/) - Microframework for web applications. - [Jooby](http://www.jooby.org) - Scalable, fast and modular micro-framework that offers multiple programming models. - [Ninja](http://www.ninjaframework.org) - Full-stack web framework. - [Pippo](http://www.pippo.ro) - Small, highly modularized, Sinatra-like framework. @@ -1115,27 +1277,33 @@ _Frameworks that handle the communication between the layers of a web applicatio - [PrimeFaces](https://www.primefaces.org) - JSF framework with both free and commercial/support versions and frontend components. - [Ratpack](https://ratpack.io) - Set of libraries that facilitate fast, efficient, evolvable and well-tested HTTP applications. - [Takes](https://github.com/yegor256/takes) - Opinionated web framework which is built around the concepts of True Object-Oriented Programming and immutability. -- [Vaadin](https://vaadin.com) - Event-driven framework that uses standard web components. Server-side architecture with Ajax on the client side. +- [Vaadin](https://vaadin.com) - Full-stack open-source Java framework that simplifies web app development. Build complex, interactive applications with Java alone, and enhance with TypeScript and React components, without needing deep JavaScript, CSS, or HTML expertise. +- [WebForms Core](https://github.com/webforms-core) - A technology for managing HTML tags from the server. +- [Erupt](https://github.com/erupts/erupt) - Annotation-Driven Low-Code & JPA Visualization ### Workflow Orchestration Engines - [Cadence](https://cadenceworkflow.io) - Stateful code platform from Uber. +- [flowable](https://github.com/flowable/flowable-engine) - Compact and efficient workflow and business process management platform. - [Temporal](https://temporal.io) - Microservice orchestration platform, forked from Cadence but gRPC based. ## Resources -### Awesome Lists +### Related Awesome Lists -_Awesome lists related to the Java & JVM ecosystem._ +_Awesome Lists related to the Java & JVM ecosystem._ - [Awesome Annotation Processing](https://github.com/gunnarmorling/awesome-annotation-processing) - [Awesome Graal](https://github.com/neomatrix369/awesome-graal) - [Awesome Gradle Plugins](https://github.com/ksoichiro/awesome-gradle) +- [Awesome Java libraries and hidden gems](https://libs.tech/java) +- [Awesome J2ME](https://github.com/hstsethi/awesome-j2me) - [AwesomeJavaFX](https://github.com/mhrimaz/AwesomeJavaFX) - [Awesome JVM](https://github.com/deephacks/awesome-jvm) - [Awesome Microservices](https://github.com/mfornos/awesome-microservices) - [Awesome REST](https://github.com/marmelab/awesome-rest) - [Awesome Selenium](https://github.com/christian-bromann/awesome-selenium) +- [Awesome Hybris](https://github.com/eminyagiz42/awesome-hybris) - [ciandcd](https://github.com/ciandcd/awesome-ciandcd) - [Useful Java Links](https://github.com/Vedenin/useful-java-links) - [Java Concurrency Checklist](https://github.com/code-review-checklists/java-concurrency) @@ -1147,7 +1315,6 @@ _Active discussions._ - [r/java](https://www.reddit.com/r/java/) - Subreddit for the Java community. - [Stack Overflow](https://stackoverflow.com/questions/tagged/java) - Question/answer platform. -- [VirtualJUG](https://virtualjug.com) - Virtual Java User Group. ### Frontends @@ -1162,45 +1329,48 @@ _Books that made a big impact and are still worth reading._ - [Core Java Volume I--Fundamentals](https://www.amazon.com/Core-Java-I-Fundamentals-10th/dp/0134177304) - [Core Java, Volume II--Advanced Features](https://www.amazon.com/Core-Java-II-Advanced-Features-10th/dp/0134177290) - [Effective Java (3rd Edition)](https://www.amazon.com/Effective-Java-3rd-Joshua-Bloch/dp/0134685997) +- [Head First Java (3rd Edition)](https://www.oreilly.com/library/view/head-first-java/9781492091646/) - [Java Concurrency in Practice](https://www.amazon.com/Java-Concurrency-Practice-Brian-Goetz/dp/0321349601) +- [The Well-Grounded Java Developer (2nd Edition)](https://www.manning.com/books/the-well-grounded-java-developer-second-edition) - [Thinking in Java](https://www.amazon.com/Thinking-Java-Edition-Bruce-Eckel/dp/0131872486) ### Podcasts and Screencasts _Something to look at or listen to while programming._ +- [140 Second Ducklings](https://twitter.com/debugagent/status/1491075324805001219) - Short videos on Twitter explaining Java debugging in depth. - [A Bootiful Podcast](https://bootifulpodcast.fm) +- [Foojay Podcast](https://foojay.io/today/category/podcast/) - [Inside Java](https://inside.java/podcast) (Official) - [Java Off Heap](http://www.javaoffheap.com) -- [The Java Council](https://virtualjug.com/#podcast) - [The Java Posse](http://www.javaposse.com) - Discontinued as of 02/2015. -### Twitter +### People + +#### Socials -_Active accounts to follow. Descriptions from Twitter._ +_Active accounts to follow. Descriptions from their socials._ - [Adam Bien](https://twitter.com/AdamBien) - Freelance author, JavaOne Rockstar speaker, consultant, Java Champion. - [Aleksey Shipilëv](https://twitter.com/shipilev) - Performance geek, benchmarking czar, concurrency bug hunter. - [Antonio Goncalves](https://twitter.com/agoncal) - Java Champion, JUG Leader, Devoxx France, Java EE 6/7, JCP, Author. - [Arun Gupta](https://twitter.com/arungupta) - Java Champion, JavaOne Rockstar, JUG Leader, Devoxx4Kids-er, VP of Developer Advocacy at Couchbase. -- [Brian Goetz](https://twitter.com/BrianGoetz) - Java Language Architect at Oracle. +- [Brian Goetz](https://bsky.app/profile/briangoetz.bsky.social) - Java Language Architect at Oracle. - [Bruno Borges](https://twitter.com/brunoborges) - Product Manager/Java Jock at Oracle. -- [Chris Richardson](https://twitter.com/crichardson) - Software architect, consultant, and serial entrepreneur, Java Champion, JavaOne Rock Star, \*POJOs in Action- author. +- [Chris Engelbert](https://twitter.com/noctarius2k) - Open Source Enthusiast, Speaker, Developer, Developer Advocacy at TimescaleDB. +- [Chris Richardson](https://bsky.app/profile/crichardson.bsky.social) - Software architect, consultant, and serial entrepreneur, Java Champion, JavaOne Rock Star, \*POJOs in Action- author. - [Ed Burns](https://twitter.com/edburns) - Consulting Member of the Technical Staff at Oracle. - [Eugen Paraschiv](https://twitter.com/baeldung) - Author of the Spring Security Course. - [Heinz Kabutz](https://twitter.com/heinzkabutz) - Java Champion, speaker, author of The Java Specialists' Newsletter, concurrency performance expert. - [Holly Cummins](https://twitter.com/holly_cummins) - Technical Lead of IBM London's Bluemix Garage, Java Champion, developer, author, JavaOne rockstar. - [James Weaver](https://twitter.com/JavaFXpert) - Java/JavaFX/IoT developer, author and speaker. -- [Java EE](https://twitter.com/Java_EE) - Official Java EE Twitter account. -- [Java Magazine](https://twitter.com/Oraclejavamag) - Official Java Magazine account. - [Java](https://twitter.com/java) - Official Java Twitter account. - [Javin Paul](https://twitter.com/javinpaul) - Well-known Java blogger. - [Josh Long](https://twitter.com/starbuxman) - Spring Advocate at Pivotal, author of O'Reilly's Cloud Native Java- and Building Microservices with Spring Boot, JavaOne Rock Star. -- [Lukas Eder](https://twitter.com/lukaseder) - Java Champion, speaker, JUG.ch co-leader, Founder and CEO Data Geekery (jOOQ). +- [Lukas Eder](https://bsky.app/profile/lukaseder.bsky.social) - Java Champion, speaker, Founder and CEO Data Geekery (jOOQ). - [Mani Sarkar](https://twitter.com/theNeomatrix369) - Java champion, Polyglot, Software Crafter involved with @graalvm, AI/ML/DL, Data Science, Developer communities, speaker & blogger. Creator of couple of awesome lists like this one. - [Mario Fusco](https://twitter.com/mariofusco) - RedHatter, JUG coordinator, frequent speaker and author. - [Mark Heckler](https://twitter.com/MkHeck) - Pivotal Principal Technologist and Developer Advocate, conference speaker, published author, and Java Champion, focusing on Internet of Things and the cloud. -- [Mark Reinhold](https://twitter.com/mreinhold) - Chief Architect, Java Platform Group, Oracle. - [Markus Eisele](https://twitter.com/myfear) - Java EE evangelist, Red Hat. - [Martijn Verburg](https://twitter.com/karianna) - London JUG co-leader, speaker, author, Java Champion and much more. - [Martin Thompson](https://twitter.com/mjpt777) - Pasty faced performance gangster. @@ -1212,7 +1382,7 @@ _Active accounts to follow. Descriptions from Twitter._ - [Sander Mak](https://twitter.com/Sander_Mak) - Java Champion, author. - [Simon Maple](https://twitter.com/sjmaple) - Java Champion, VirtualJUG founder, LJC leader, RebelLabs author. - [Spencer Gibb](https://twitter.com/spencerbgibb) - Software Engineer, Dad, Geek, Co-founder and Lead of Spring Cloud Core @pivotal. -- [Stephen Colebourne](https://twitter.com/jodastephen) - Java Champion, speaker. +- [Stephen Colebourne](https://bsky.app/profile/jodastephen.bsky.social) - Java Champion, speaker. - [Trisha Gee](https://twitter.com/trisha_gee) - Java Champion and speaker. - [Venkat Subramaniam](https://twitter.com/venkat_s) - Author, University of Houston professor, MicroSoft MVP award recipient, JavaOne Rock Star, Java Champion. - [Vlad Mihalcea](https://twitter.com/vlad_mihalcea) - Java Champion working on Hypersistence Optimizer, database aficionado, author of High-Performance Java Persistence book. @@ -1237,6 +1407,7 @@ _Sites to read._ - [TheServerSide.com](http://www.theserverside.com) - [Vanilla Java](https://vanilla-java.github.io) - [Voxxed](https://www.voxxed.com) +- [Java Weekly](https://discu.eu/weekly/java/) ## Contributing @@ -1244,4 +1415,4 @@ Contributions are very welcome! Please have a look at the [CONTRIBUTING](https://github.com/akullpp/awesome-java/blob/master/CONTRIBUTING.md) guidelines and [the validation tools](https://github.com/akullpp/awesome-java-lint). -[c]: https://cdn.rawgit.com/akullpp/23246ca832bda82bb505230bf3538e2a/raw/d9bcdb769bf025292f9c6bc1290f01f1fcd1f864/commercial.svg +[c]: https://cdn.rawgit.com/akullpp/23246ca832bda82bb505230bf3538e2a/raw/d9bcdb769bf025292f9c6bc1290f01f1fcd1f864/commercial.svg \ No newline at end of file