Awesome ECS

A curated list of Entity-Component-System (ECS) libraries and resources.

ECS Libraries
Applications powered by ECS
Other Resources
- Benchmarks
- Blog Posts
- Talks & Slides
- Books
- Tutorials
- Lists
- References
Contributing

Legend: 🟢 commit within 1 yr · 🟡 commit within 3 yr · 💀 archived · ⭐ GitHub stars as of 2026-10-12. Software entries are ordered by stars; inactive entries (archived, or no commits for 3+ years) are folded at the end of each software category. Other resources keep their existing order.

ECS Libraries

Libraries and frameworks implementing the Entity-Component-System pattern.

C/C++

🟢 entt - Fast and reliable entity-component system. ⭐ 13.2k
🟢 Flecs - A Multithreaded Entity Component System written for C89 & C99. ⭐ 8.7k
🟢 WickedEngine’s ECS - WickedEngine’s ECS implementation. ⭐ 7.3k
🟡 EntityX - Fast, type-safe C++ entity component system. ⭐ 2.3k
🟢 pico_ecs - Single-header and cross-platform ECS. ⭐ 564
🟢 Gaia-ECS - Fast and type-safe C++17 archetype-based entity component system. ⭐ 134
🟢 mustache - A fast, modern C++ entity component system. ⭐ 78

C#

🟢 Arch - A high-performance Archetype & Chunks Entity Component System for game development and data-oriented programming. ⭐ 1.8k
🟡 Svelto.ECS - Lightweight data oriented entity component system framework. ⭐ 1.4k
🟢 Friflo Engine ECS - ECS for .NET with focus on performance, cache locality and DX. ⭐ 785
🟡 Morpeh - ECS Framework for Unity Game Engine and .NET Platform. ⭐ 672
🟢 Fennecs - … the tiny, tiny, high-energy Entity-Component System! ⭐ 470
🟢 DragonECS - ECS for Unity and .NET. ⭐ 343
🟢 ME.BECS - ECS for Unity with full game state automatic rollbacks. ⭐ 257
🟢 Massive ECS - Bitset-based ECS with rollbacks. C# library and Unity package. ⭐ 224
🟢 Static ECS - C# Hierarchical Inverted Bitmap ECS framework. ⭐ 211
🟢 Frent - Data oriented ECF with an ECS api for C#, Godot, and Unity. ⭐ 187
🟢 TinyEcs - A tiny bevy-like archetype-style ECS library for dotnet. ⭐ 153

Common Lisp

cl-fast-ecs - Blazingly fast Entity-Component-System microframework. [gitlab]

Elixir

🟡 ECSx - An ECS framework for Elixir. ⭐ 270

Python

🟢 esper - A lightweight Entity System for Python. ⭐ 703

Rust

🟢 bevy_ecs - Simple to use, ergonomic, fast, massively parallel, opinionated, and featureful written in Rust. ⭐ 48.9k
🟡 specs - Parallel entity component system written in Rust. ⭐ 2.6k
🟢 hecs - High-performance, minimalist entity-component-system. ⭐ 1.4k
🟢 shipyard - Entity Component System written in Rust. ⭐ 891

Go

🟡 ecs - A Go-implementation of the Entity-Component-System paradigm. ⭐ 338
🟢 Ark - An archetype-based Entity Component System for Go. ⭐ 302

Lua

🟢 Concord - A feature-complete ECS library. ⭐ 326
🟢 evolved.lua - Evolved ECS (Entity-Component-System) for Lua. ⭐ 224

Julia

🟢 Ark.jl - An archetype-based Entity Component System (ECS) for Julia. It is a port of the Go ECS Ark. ⭐ 84

Kotlin

🟢 Fleks - Fast, lightweight, multi-platform entity component system in Kotlin. ⭐ 270

JavaScript / TypeScript

🟢 bitECS - Functional, minimal, data-oriented, ultra-high performance ECS library. ⭐ 1.5k
🟢 miniplex - The gentle game entity manager, focused on ease of use and developer experience. ⭐ 1.1k
🟢 becsy - A multithreaded Entity Component System (ECS) for TypeScript and JavaScript, inspired by ECSY and bitecs. ⭐ 298
🟡 Thyseus - An archetypal Entity Component System, built entirely in Typescript. ⭐ 86
🟢 Woven-ECS - A multithreaded ECS framework for TypeScript aimed at collaborative browser applications. ⭐ 12

Zig

🟢 Zig ECS - A Zig port of the fantasic Entt. ⭐ 431
🟢 ZCS - An archetype based entity component system written in Zig. ⭐ 151
🟢 knoedel - Data oriented application framework written in Zig (ECS). ⭐ 47
🟡 mach-ecs - Entity Component System from first-principles designed for Zig. ⭐ 34
🟢 Comptime ECS - Comptime-defined ECS implementation in Zig. ⭐ 4

Haskell

🟢 apecs - A fast, extensible, type driven Haskell ECS framework for games. ⭐ 425

Inactive (22): archived or no commits for 3+ years</summary>

Entitas - The Entity Component System Framework for C# and Unity. ⭐ 7.7k · last commit 2023
legion - High performance Rust ECS library. ⭐ 1.7k · last commit 2021
💀 ECSY - Entity Component System for javascript. ⭐ 1.2k · last commit 2025
Artemis-odb - A continuation of the popular Artemis ECS framework. ⭐ 832 · last commit 2021
tiny-ecs - Entity Component System for Lua that’s simple, flexible, and useful. ⭐ 789 · last commit 2020
DefaultEcs - ECS for syntax and usage simplicity with maximum performance. ⭐ 765 · last commit 2023
Kengine - Game engine with an Entity-Component-System (ECS) architecture. ⭐ 618 · last commit 2023
ecst - Experimental C++14 multithreaded compile-time entity-compnent-system library. ⭐ 490 · last commit 2018
💀 ECS - C++ single-header entity component system library. ⭐ 481 · last commit 2019
💀 anax - Open source C++ entity system. ⭐ 460 · last commit 2021
ECS Lua - A fast and easy to use ECS engine for game development. ⭐ 234 · last commit 2021
EntityPlus - C++14 entity component system. ⭐ 192 · last commit 2020
EntityFu - A simple, fast entity component system written in C++. ⭐ 86 · last commit 2016
LeoEcsLite - Lightweight C# Entity Component System framework. ⭐ 62 · last commit 2022
Ginseng - An ESC library designed for use in games. ⭐ 56 · last commit 2021
Nata - Entity management for Lua. ⭐ 51 · last commit 2020
ecs.hpp - A single header C++14 entity component system library. ⭐ 41 · last commit 2023
beast - Basic Entity/Aspect/System Toolkit. ⭐ 30 · last commit 2021
matter - C++17/20 ECS implementation. ⭐ 21 · last commit 2019
Fast ECS - Simple and fast Entity-Component-System (ECS) library written in Dart. ⭐ 17 · last commit 2021
goomy - A tiny, experimental ECS framework. ⭐ 14 · last commit 2019
cl-ecs - An implementation of the Entity-Component-System pattern mostly used in game development. ⭐ 8 · last commit 2016

</details>

Applications powered by ECS

Game Engines

Game engines built on ECS architecture.

C++

🟢 WickedEngine - 3D engine with modern graphics. ⭐ 7.3k
🟢 halley - A lightweight game engine written in modern C++. ⭐ 3.9k
🟢 Lumos - Cross-Platform C++ 2D/3D game engine. ⭐ 1.6k
🟡 MxEngine - C++ open source 3D game engine. ⭐ 1.2k
🟢 nebula - Open-source and free-to-use modern C++ game engine. ⭐ 1.1k
🟡 Lina Engine - Modular, tiny and fast C++ game engine, aimed to develop 3D desktop games. ⭐ 899
🟢 supernova - Game engine for 2D and 3D projects with ECS and data-oriented design. ⭐ 866
🟢 Nazara Engine - Cross-platform framework aimed at real-time applications requiring audio, 2D and 3D real-time rendering, network and more. ⭐ 843
🟢 crown - General purpose data-driven game engine. ⭐ 30

Go

🟡 Engo - A cross-platform game engine written in Go following an interpretation of the Entity Component System paradigm. ⭐ 1.8k

Rust

🟢 Bevy - A refreshingly simple data-driven game engine built in Rust. ⭐ 48.9k
🟡 Ambient - The multiplayer game engine. ⭐ 3.9k
🟢 Bones - An easy-to-use game engine for making real games. ⭐ 314

Zig

🟢 mach - Game engine & graphics toolkit for building high-performance, truly cross-platform, robust & modular games, visualizations, and desktop/mobile GUI apps. ⭐ 4.8k

Inactive (7): archived or no commits for 3+ years</summary>

💀 Amethyst - Data-oriented and data-driven game engine written in Rust. ⭐ 8k · last commit 2021
Sparky - Cross-Platform High Performance 2D/3D game engine. ⭐ 1.2k · last commit 2016
kengine - Game engine focused on ease-of-use, runtime extensibility and compile-time type safety. ⭐ 618 · last commit 2023
Engine - Basic cross-platform 3D game engine. ⭐ 301 · last commit 2018
💀 shiva - Modern Cross-Platform C++ Engine with modularity. ⭐ 160 · last commit 2019
Usagi - Hierarchical component entity system based game engine. ⭐ 57 · last commit 2022
igneous - Open source game engine written in C++. ⭐ 52 · last commit 2019

</details>

Graphics Engines

Graphics and rendering engines using ECS.

C++

🟢 The Forge - Cross-Platform Rendering Framework with support for PC Windows, Linux, Ray Tracing, macOS/iOS, Android, XBOX, PS4, PS5, Switch, Quest 2. ⭐ 5.7k
🟢 bs::framework - Modern C++14 library for the development of real-time graphical applications. ⭐ 1.9k

Physics Libraries

Physics simulation libraries organized as ECS.

C++

🟢 edyn - A real-time physics engine organized as an ECS. ⭐ 792

Other Resources

Benchmarks

Performance benchmarks comparing ECS frameworks.

🟡 ecs_benchmark - Benchmarks of common ECS (Entity-Component-System)-Frameworks in C/C++. ⭐ 308
🟢 ECS C# Benchmark - Benchmarks of the main ECS Frameworks for: C#. ⭐ 181
🟢 ECS C# Benchmark - Common uses-cases - Benchmark many common use cases in the simplest and most performant variant. ⭐ 48
CSharpECSComparison - Benchmarks of common ECS Frameworks for C#. ⭐ 53
🟢 Lua ECS Library Benchmark - Benchmarks of common ECS Frameworks in Lua. ⭐ 9