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

• ECS Libraries
• Applications powered by ECS
  • Game Engines
  • Graphics Engines
  • Physics Libraries
• 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.

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

• 🟢 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

• 🟢 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

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

• 🟡 ECSx - An ECS framework for Elixir. ⭐ 270

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

• 🟢 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

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

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

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

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

• 🟢 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 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

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

Game engines built on ECS architecture.

• 🟢 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

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

• 🟢 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

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

Graphics and rendering engines using ECS.

• 🟢 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 simulation libraries organized as ECS.

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

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

Articles and blog posts about ECS and data-oriented design.

• Data-oriented design
• ECS back and forth
• Let's build an Entity Component System from scratch
• Entity Systems are the future of MMOG development
• Building an ECS
• Systems Interaction in Entity-Component-System (events)
• Overview of ECS variants & definitions
• Understand data-oriented design
• Unity ECS series
• Seba's Lab
• WickedEngine's ECS implementation

Conference talks and presentations about ECS.

• itCppCon19: ECS back and forth
• GDC 2018: Unity at GDC - A Data Oriented Approach to Using Component Systems
• Meeting C++ 2018: Data oriented design in practice
• CppCon 2018: Stoyan Nikolov “OOP Is Dead, Long Live Data-oriented Design”
• Data Oriented Design Resources
• Data Oriented GUI in Rust
• Is There More to Game Architecture than ECS - Bob Nystrom (Roguelike Celebration 2018)
• Unite 2018: C# Job System + ECS usage and demo with Intel
• Codestar 2018 ECS - A Different Approach to Game Development
• CppCon 2014: Mike Acton "Data-Oriented Design and C++"

Books on ECS and data-oriented design.

• Data-Oriented Design

Tutorial series for learning ECS.

• Starting a new 2D platformer with ECS

Related curated lists.

• Entity Component System & Data Oriented Design

Wikis, FAQs, glossaries, and other reference material on ECS.

• Entity Systems Wiki
• Entity Component Systems FAQ

Contributions are very welcome! Please read the contribution guidelines first. Also, please feel free to report any error.