More?

https://github.com/nem0/LumixEngine

https://www.banshee3d.com/

https://github.com/AtomicGameEngine/AtomicGameEngine

http://torque3d.org/

https://www.panda3d.org/

https://github.com/xenko3d/xenko

https://github.com/begla/Intrinsic

https://github.com/godotengine/godot

https://github.com/fredakilla/GPlayEngine

https://github.com/volcoma/EtherealEngine

https://casual-effects.com/g3d/www/index.html