https://psichix.github.io/Oxygengine/
Oxygengine is using hecs
as its ECS framework to achieve better performance,
reduce application complexity and help decouple state from the logic as much as
possible. More about hecs
and ECS here: https://github.com/Ralith/hecs
Current milestone progress: https://github.com/PsichiX/Oxygengine/projects/1