ClippingMagic.com - Remove image backgrounds online. Make backgrounds transparent, white, etc. Edit, crop, rotate, fix colors, add shadows, all you need for great photos!
Unity - The multiplatform game creation tools for everyone.
Icons8 Background Remover - Quickly remove the background from any photo
Godot Engine - Feature-packed 2D and 3D open source game engine.
Trace by Sticker Mule - Remove the background from any image for free
Blender - Blender is the open source, cross platform suite of tools for 3D creation.