This site contains all the usefull resources I have collected and want to share.
Handmade Hero - low level game programming using C
flecs - super fast C and C++ ECS
Rant: Entity systems and the Rust borrow checker - why Rust sucks and you shouldn't use ECS
Why an ECS just ain't it - Entity Mega Struct, the alternative to ECS
Toy Engine - Super thin 3D C++ OpenGL game engine
git.mr4th.com - Allen Webster opengl headers