Epic Games has a program called MegaGrants where they give a bunch of money to various projects.
https://www.unrealengine.com/en-US/megagrants
For example they gave $250k to the Godot game engine project in 2020.
https://godotengine.org/article/godot-engine-was-awarded-epi...
I wouldn't call anything Epic Games does charity: it's all empire expansion for them.
Looks like they did literally nothing in 2024?
Also notably $1.2 million to the Blender Foundation.