Unity ECS Resources

[Github] Search: ECS

https://github.com/search?l=C%23&q=entity-component-system&type=Repositories

[Reddit] Question: Books or comprehensive publications on ECS

https://www.reddit.com/r/gamedev/comments/efo53r/books_or_comprehensive_publications_on_ecs/

unity forum

https://forum.unity.com/threads/books-on-data-oriented-design-pattern-ecs.684778/

[Book] Data-Oriented Design

https://www.dataorienteddesign.com/dodbook/node1.html

Other ECS forum

https://gametorrahod.com/tag/unity-ecs/