Awesome

What is this?

This is a rough comparison table of all the "popular" ECS frameworks written and used in C#.

Table

Support...
:heavy_check_mark: = Full
:heavy_check_mark:Ex = Full with extension
:heavy_minus_sign: = Partial
:x: = None

Feature	Leo<br/>ECS	Leo<br/>EcsLite	Default<br/>Ecs	Svelto<br/>.ECS	Morpeh	Unity<br/>ECS	Entitas	chrome<br/>alex<br/>/ecs	Nano<br/>ECS	Ego<br/>CS	actors<br/>.unity	Feature
Archetype based	:x:	:x:	:x:	:heavy_check_mark:	:x:	:heavy_check_mark:	:x:	:heavy_check_mark:?	:x:?	:x:	:x:	Archetype based
Filter/Query operations	Has/Not<br/>(Inc/Exc)	Has/Not<br/>(Inc/Exc)	Has/Not<br/>Or/Nor		Has/Not<br/>(With/<br/>Without)	Has/Not/Or<br/>(All/Any/None)	Has/Not, Any<br/>(All/None)	Has/Not, Any	Has/Not<br/>(With/<br/>Without)	Has	Has	Filter/Query operations
Components Type support	struct	struct	struct<br/>/class<br/>/interface	struct<br/>/interface	struct	struct<br/>/class	class	struct	class	class	class?	Components Type support
Code Generation based	:x:	:x:	:x:		:x:	:x:	:heavy_check_mark:	:heavy_check_mark:	:heavy_check_mark:	:x:	:x:	Code Generation based
Dependencies	None	None	None	None	:heavy_minus_sign:Unity<br/>Odin Inspector	Unity	:heavy_minus_sign:Unity	Unity	Unity	Unity	Unity	Dependencies
Engine agnostic	:heavy_check_mark:	:heavy_check_mark:	:x:?	:heavy_check_mark:	:heavy_minus_sign:	:x:	:heavy_check_mark:	:x:	:x:	:x:	:x:	Engine agnostic
Custom Engine Support	:heavy_check_mark:	:heavy_check_mark:	:heavy_check_mark:		:heavy_check_mark:	:x:	:heavy_minus_sign:	:x:	:x:	:x:	:x:	Custom Engine Support
Threading support	:heavy_check_mark:Ex	:heavy_check_mark:Ex	:heavy_check_mark:		:x:		:heavy_minus_sign:	:heavy_minus_sign:?	:x:	:x:?	:heavy_minus_sign:?	Threading support
World Events/Messages	:heavy_check_mark:	:heavy_check_mark:	:heavy_check_mark:		:heavy_check_mark:	:x:?	:x:		:x:?	:heavy_check_mark:	:heavy_check_mark:	World Events/Messages
One-Frame Components	:heavy_check_mark:	:heavy_check_mark:			:heavy_check_mark:EX	:x:?	:heavy_check_mark:					One-Frame Components
Dependency Injection<br/>Support	:heavy_check_mark:	:heavy_check_mark:	:x:		:x:	:x:	:x:	:x:	:x:	:x:		Dependency Injection<br/>Support
Shared Resource	:heavy_check_mark:	:heavy_check_mark:	:heavy_check_mark:		:heavy_check_mark:	:heavy_check_mark:	:heavy_check_mark:				:heavy_check_mark:	Shared Resource
Thread-safe	:x:	:x:	:heavy_minus_sign:	:heavy_minus_sign:	:x:	:x:	:x:	:x:?	:x:	:x:	:x:?	Thread-safe
Reactive System	:x:	:x:	:heavy_check_mark:	:heavy_minus_sign:	:x:	:x:?	:heavy_check_mark:		:heavy_check_mark:		:heavy_check_mark:	Reactive System
Multiple components of same type on entity	:x:	:x:	:x:	:x:	:x:	:x:	:x:			:x:		Multiple components of same type on entity
Components can live without entities	:x:	:x:	:heavy_check_mark:	:x:	:x:	:x:	:heavy_check_mark:					Components can live without entities
Entities can live without components	:x:	:x:		:x:	:x:	:heavy_check_mark:	:heavy_check_mark:					Entities can live without components
Unity Editor View support	:heavy_check_mark:Ex	:heavy_check_mark:Ex	:x:	:x:	:heavy_check_mark:	:heavy_check_mark:	:heavy_check_mark:	:heavy_check_mark:	:heavy_check_mark:	:heavy_check_mark:	:heavy_check_mark:	Unity Editor View support
Unity Editor Full Integration*	:x:	:x:	:x:	:x:	:heavy_minus_sign:?	:x:(WIP)	:heavy_check_mark:		:heavy_check_mark:	:heavy_check_mark:?		Unity Editor Full Integration*
Unity Burst Compatible	:x:	:heavy_check_mark:Ex	:x:	:heavy_check_mark:	:heavy_minus_sign:	:heavy_check_mark:	:x:	:heavy_check_mark:	:x:?	:x:?	:x:	Unity Burst Compatible
Unity Jobs Compatible	:x:	:heavy_check_mark:Ex	:x:	:heavy_check_mark:	:heavy_minus_sign:	:heavy_check_mark:	:x:	:heavy_check_mark:	:x:?	:x:?	:heavy_minus_sign:?	Unity Jobs Compatible
License	MIT	MIT	MIT-0	MIT	MIT	Unity<br/>Companion<br/>License	MIT	MIT	MIT	MIT	MIT	License
Last Major Version Release Date	Feb<br/>2022	Feb<br/>2022	Feb<br/>2022	May<br/>2023	May<br/>2023	Sep<br/>2022	Sep<br/>2022	Sep<br/>2020?	Dec<br/>2019	Mar<br/>2017	Jul<br/>2020	Last Major Version Release Date

Feature	Leo<br/>ECS	Leo<br/>EcsLite	Default<br/>Ecs	Svelto<br/>.ECS	Morpeh	Unity<br/>ECS	Entitas	chrome<br/>alex<br/>/ecs	Nano<br/>ECS	Ego<br/>CS	actors<br/>.unity	Feature

*(Unity Editor) Full Integration means that systems & components can be made, disabled, enabled, and configured in Unity Editor.

How can I contribute?

Find a table cell (or multiple) that isn't filled out, and make an issue/pull request about it. While stating why it's true (explanation doesn't have to be very sophisticated or sourced/grounded, most of the time).
OR
Find a table cell (or multiple) that has a quesiton mark, and source why it's true/untrue with an issue or pull request.

FAQ

Q: Why not split the table?
A: I think the table isn't big enough for a split to be valuable, and it's easier to check for all the features you'd want with one glance, instead of going back and forth between two tables.

Q: xECS isn't here, why's that?
A: Idk, ask about it in a new issue, it might be too niche, or something.