skypjack/entt

Health v2 · maintenance only

Adoption not part of the score

13050 stars · 1111 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

EnTT is a header-only, dependency-free C++17/20 entity component system (ECS) library for game programming and other data-oriented applications. It provides fast, reliable entity management along with extras like reflection, event dispatching, and resource handling.

Use cases

• build a game engine with an entity component system in C++
• manage thousands of game entities with components efficiently
• replace OOP inheritance hierarchies with data-oriented design
• implement an event dispatcher or delegate system in C++
• add a lightweight ECS to an existing C++ project without dependencies
• prototype gameplay systems with fast component iteration

When to choose

• you need a production-ready, battle-tested ECS in modern C++ (used by Minecraft)
• you want a header-only library with zero dependencies
• performance and cache-friendly component iteration matter
• you want C++17/20 idiomatic APIs with reflection and signaling extras

When to avoid

• your project is not in C++ or targets pre-C++17 compilers
• you need a full game engine with rendering, physics, and audio out of the box
• you prefer a scene-graph or actor-model architecture over ECS

Facets

library · maturity stable

game-engine simulation serialization simulation developer-tools cpp cross-platform ecs entity-component-system header-only data-oriented-design modern-cpp no-dependencies reflection gamedev game-development

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