# sschmid/Entitas

Entitas is a super fast Entity Component System (ECS) Framework specifically made for C# and Unity

Repository: https://github.com/sschmid/Entitas
Canonical: https://ross.abutalabs.com/products/entitas
Language: C#
License: MIT
License Family: permissive
Topics: c-sharp, unity, ecs, tdd, performance, design-pattern, design-patterns, gamedev, game-development, game-engine, code-generation, csharp, entity, entity-component-system, game, unity3d
Last push: 2023-12-30T16:18:56+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 4551, "days_push": 977, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 7671, forks 1129 (observed 2026-08-28T04:10:02.321778+00:00)

## What it is
Entitas is a fast Entity Component System (ECS) framework built specifically for C# and Unity, optimized for garbage-collected environments. It includes an optional code generator and Unity visual debugging integration, and also works in pure C# standalone projects.

## Use cases
- build a Unity game with an ECS architecture
- structure game logic with entity component system in C#
- reduce boilerplate in Unity game code with code generation
- debug entity systems visually inside the Unity editor
- use an ECS framework in a pure C# project without Unity
- write testable game logic with TDD

## When to choose
- you are building a C# or Unity game and want a battle-tested, popular ECS
- you need a garbage-collector-friendly ECS with strong performance
- you want visual debugging of entities and systems in Unity
- you want an ECS that works outside Unity in plain C#

## When to avoid
- you are not using C# or Unity
- you prefer a full game engine with built-in ECS rather than a framework
- you need a framework with frequent recent updates and active maintenance

## Facets
- artifact type: framework
- maturity: stable
- function: game-engine, plugin-system, developer-tools
- domain: gaming-tools, cross-platform
- platform: game-engine, c, cross-platform
- tags: ecs, entity-component-system, unity3d, csharp, code-generation, visual-debugging, tdd, performance, game-development

## Member repositories
- sschmid/Entitas (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:10:02.321778+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:36:03.697294+00:00, confidence not recorded.
  - readme: https://github.com/sschmid/Entitas (fetched 2026-08-28T04:10:02.321778+00:00, sha 60ca51d61c3e)
- Data as of 2026-08-30T08:39:29.467469+00:00.