Gaming meets modern C++ - a fast and reliable entity component system (ECS) and much more

A game engine with an emphasis on real-time cutting-edge solutions

Cross-Platform C++ 2D/3D game engine

Godex is a Godot Engine ECS library.

Esoterica Engine

Realtime 3D Game-Engine with a focus on space sim. Written in C++ 14

A fully lock-free game engine written in C++20

A fast C++23 3D game engine for modern devices, with wide platform support

Edyn is a real-time physics engine organized as an ECS.

Game engine with an Entity-Component-System (ECS) architecture. Focus on ease-of-use, runtime extensibility and compile-time type safety.

Cross-platform GPU-oriented C++ application/game framework

Rythe is a data-oriented C++20 game engine built to make optimal use of modern hardware.

Ubpa Entity-Component-System (U ECS) in Unity3D-style

Entitas++ is a fast Entity Component System (ECS) C++11 port of Entitas C#

Game engine for 2D and 3D projects with entity component system (ECS) and data-oriented design

AGE: Arc Game Engine is an open-source engine for building 2D & 3D real-time rendering and interactive contents, especially video games with C# scripting support.

A slot map is a high-performance associative container with persistent unique 32/64 bit keys to access stored values.

Benchmarks of common ECS (Entity-Component-System)-Frameworks in C++ (or C)

A single-file, immediate-mode sequencer widget for C++17, Dear ImGui and EnTT

Vulkan based game engine