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ECS

Entity Component System implementations

Crates

  • apecs

    ECS

    An asyncronous and parallel entity-component system

    • Latest version:
      0.8.4
    • Downloads:
      43,127
    • Recent downloads:
      369
    • License:
      MIT OR Apache-2.0
    • Stars:
      79
    • Last activity:
      2024-09-20

  • bevy_ecs

    ECS

    Bevy Engine's entity component system

    • Latest version:
      0.18.1
    • Downloads:
      5,214,049
    • Recent downloads:
      1,119,689
    • License:
      MIT OR Apache-2.0
    • Stars:
      44,942
    • Last activity:
      2026-03-08

  • brood

    ECS

    A fast and flexible entity component system library.

    • Latest version:
      0.9.1
    • Downloads:
      16,457
    • Recent downloads:
      94
    • License:
      MIT OR Apache-2.0
    • Stars:
      41
    • Last activity:
      2023-11-20

  • calx-ecs

    ECS

    Serializable entity component system for games

    • Latest version:
      0.6.1
    • Downloads:
      11,350
    • Recent downloads:
      132
    • License:
      MIT OR Apache-2.0
    • Stars:
      18
    • Last activity:
      2018-07-30

  • dces

    ECS

    DCES entity component system

    • Latest version:
      0.3.1
    • Downloads:
      38,729
    • Recent downloads:
      931
    • License:
      MIT

  • dotrix

    3D Rendering · Game Engines · ECS

    3D Game Engine

    • Latest version:
      0.5.2
    • Downloads:
      9,834
    • Recent downloads:
      46
    • License:
      MIT
    • Stars:
      310
    • Last activity:
      2025-06-09

  • edict

    ECS

    Powerful entity-component-system library

    • Latest version:
      0.6.1
    • Downloads:
      42,686
    • Recent downloads:
      564
    • License:
      MIT OR Apache-2.0
    • Stars:
      104
    • Last activity:
      2025-11-21

  • entity-trait-system

    ECS

    An alternative to ECS

    • Latest version:
      1.1.8
    • Downloads:
      396
    • Recent downloads:
      29
    • License:
      MIT
    • Stars:
      11
    • Last activity:
      2025-12-07

  • evenio

    ECS

    An event-driven entity component system

    • Latest version:
      0.6.0
    • Downloads:
      17,007
    • Recent downloads:
      592
    • License:
      MIT
    • Stars:
      148
    • Last activity:
      2024-09-09

  • flax

    ECS

    An ergonomic archetypical ECS

    • Latest version:
      0.7.1
    • Downloads:
      17,348
    • Recent downloads:
      207
    • License:
      MIT
    • Stars:
      92
    • Last activity:
      2025-07-26

  • froggy

    ECS

    Froggy is a prototype for the Component Graph System programming model. It aims to combine the convenience of composition-style Object-Oriented Programming with the performance close to Entity-Component Systems.

    • Latest version:
      0.4.4
    • Downloads:
      37,244
    • Recent downloads:
      1,163
    • License:
      MIT/Apache-2.0
    • Stars:
      321
    • Last activity:
      2020-09-28

  • hecs

    ECS

    A fast, minimal, and ergonomic entity-component-system library

    • Latest version:
      0.11.0
    • Downloads:
      351,176
    • Recent downloads:
      62,440
    • License:
      MIT OR Apache-2.0
    • Stars:
      1,252
    • Last activity:
      2026-03-05

  • legion

    ECS

    High performance entity component system (ECS) library

    • Latest version:
      0.4.0
    • Downloads:
      248,999
    • Recent downloads:
      23,184
    • License:
      MIT
    • Stars:
      1,706
    • Last activity:
      2021-12-30

  • shipyard

    ECS

    Entity Component System

    • Chat on Gitter
    • Latest version:
      0.11.2
    • Downloads:
      121,367
    • Recent downloads:
      16,204
    • License:
      MIT OR Apache-2.0
    • Stars:
      837
    • Last activity:
      2026-03-02

  • sparsey

    ECS

    Entity Component System based on sparse sets

    • Latest version:
      0.13.3
    • Downloads:
      21,567
    • Recent downloads:
      114
    • License:
      MIT OR Apache-2.0
    • Stars:
      193
    • Last activity:
      2025-06-19

  • specs

    ECS

    Specs is an Entity-Component-System library written in Rust.

    • Chat on Gitter
    • Latest version:
      0.20.0
    • Downloads:
      970,130
    • Recent downloads:
      72,964
    • License:
      MIT OR Apache-2.0
    • Stars:
      2,604
    • Last activity:
      2024-06-07

Archived

These crates are no longer maintained, but may still be of interest.

  • pyro

    ECS

    Entity component system

    • Latest version:
      0.2.5
    • Downloads:
      11,785
    • Recent downloads:
      117
    • License:
      MIT
    • Stars:
      137
    • Last activity:
      2020-01-05

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