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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:
      43,525
    • Recent downloads:
      221
    • License:
      MIT OR Apache-2.0
    • Stars:
      79
    • Last activity:
      2024-09-20

  • bevy_ecs

    ECS

    Bevy Engine's entity component system

    • Latest version:
      0.19.1
    • Downloads:
      9,185,086
    • Recent downloads:
      2,042,166
    • License:
      MIT OR Apache-2.0
    • Stars:
      48,613
    • Last activity:
      2026-10-04

  • brood

    ECS

    A fast and flexible entity component system library.

    • Latest version:
      0.9.1
    • Downloads:
      16,572
    • Recent downloads:
      64
    • 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:
      11,641
    • Recent downloads:
      129
    • 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:
      40,732
    • Recent downloads:
      910
    • License:
      MIT

  • dotrix

    3D Rendering · Game Engines · ECS

    3D Game Engine

    • Latest version:
      0.5.2
    • Downloads:
      9,885
    • Recent downloads:
      27
    • License:
      MIT
    • Stars:
      312
    • Last activity:
      2026-09-18

  • edict

    ECS

    Powerful entity-component-system library

    • Latest version:
      0.6.1
    • Downloads:
      43,733
    • Recent downloads:
      417
    • License:
      MIT OR Apache-2.0
    • Stars:
      111
    • Last activity:
      2026-07-26

  • entity-trait-system

    ECS

    An alternative to ECS

    • Latest version:
      1.1.8
    • Downloads:
      443
    • Recent downloads:
      25
    • License:
      MIT
    • Stars:
      12
    • Last activity:
      2025-12-07

  • evenio

    ECS

    An event-driven entity component system

    • Latest version:
      0.6.0
    • Downloads:
      18,109
    • Recent downloads:
      450
    • License:
      MIT
    • Stars:
      150
    • Last activity:
      2024-09-09

  • flax

    ECS

    An ergonomic archetypical ECS

    • Latest version:
      0.7.1
    • Downloads:
      22,209
    • Recent downloads:
      214
    • License:
      MIT
    • Stars:
      99
    • 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:
      40,118
    • Recent downloads:
      1,263
    • License:
      MIT/Apache-2.0
    • Stars:
      324
    • Last activity:
      2020-09-28

  • hecs

    ECS

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

    • Latest version:
      0.11.2
    • Downloads:
      585,994
    • Recent downloads:
      144,726
    • License:
      MIT OR Apache-2.0
    • Stars:
      1,378
    • Last activity:
      2026-10-04

  • legion

    ECS

    High performance entity component system (ECS) library

    • Latest version:
      0.4.0
    • Downloads:
      290,855
    • Recent downloads:
      16,926
    • License:
      MIT
    • Stars:
      1,722
    • Last activity:
      2021-12-30

  • shipyard

    ECS

    Entity Component System

    • Chat on Gitter
    • Latest version:
      0.11.5
    • Downloads:
      172,865
    • Recent downloads:
      24,323
    • License:
      MIT OR Apache-2.0
    • Stars:
      889
    • Last activity:
      2026-10-04

  • sparsey

    ECS

    Entity Component System based on sparse sets

    • Latest version:
      0.13.4
    • Downloads:
      21,964
    • Recent downloads:
      214
    • License:
      MIT OR Apache-2.0
    • Stars:
      195
    • Last activity:
      2026-09-08

  • specs

    ECS

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

    • Chat on Gitter
    • Latest version:
      0.20.0
    • Downloads:
      1,140,703
    • Recent downloads:
      63,153
    • License:
      MIT OR Apache-2.0
    • Stars:
      2,616
    • 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:
      12,041
    • Recent downloads:
      93
    • License:
      MIT
    • Stars:
      138
    • Last activity:
      2020-01-05

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