Spring Boot helps you to create Spring-powered, production-grade applications and services with absolute minimum fuss.

Free and Open Source, Distributed, RESTful Search Engine

Ghidra is a software reverse engineering (SRE) framework

Spring Framework

Google core libraries for Java

RxJava – Reactive Extensions for the JVM – a library for composing asynchronous and event-based programs using observable sequences for the Java VM.

The java implementation of Apache Dubbo. An RPC and microservice framework.

Getting Started with Spring Boot 3:

ZXing ("Zebra Crossing") barcode scanning library for Java, Android

Mirror of Apache Kafka

Open Source Identity and Access Management For Modern Applications and Services

🔥 Seata is an easy-to-use, high-performance, open source distributed transaction solution.

Apache Flink

OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3)

a fast, scalable, multi-language and extensible build system

Hystrix is a latency and fault tolerance library designed to isolate points of access to remote systems, services and 3rd party libraries, stop cascading failure and enable resilience in complex di…

A Java serialization/deserialization library to convert Java Objects into JSON and back

Redisson - Valkey & Redis Java client. Real-Time Data Platform. Sync/Async/RxJava/Reactive API. Over 50 Valkey and Redis based Java objects and services: Set, Multimap, SortedSet, Map, List, Queue,…

Apache RocketMQ is a cloud native messaging and streaming platform, making it simple to build event-driven applications.

This project is deprecated and stale. The latest ExoPlayer code is available in https://github.com/androidx/media

GraalVM compiles applications into native executables that start instantly, scale fast, and use fewer compute resources 🚀

Open-source IoT Platform - Device management, data collection, processing and visualization.

IntelliJ IDEA & IntelliJ Platform

ANTLR (ANother Tool for Language Recognition) is a powerful parser generator for reading, processing, executing, or translating structured text or binary files.

A collection of algorithms and data structures

Zipkin is a distributed tracing system

An Android library for managing images and the memory they use.

The official home of the Presto distributed SQL query engine for big data

QuestDB is a high performance, open-source, time-series database

Most popular Mocking framework for unit tests written in Java