Blackra1n - (This is an OUTDATED jailbreaking method.)
Unity - The multiplatform game creation tools for everyone.
checkra1n - Jailbreak for iPhone 5s through iPhone X, iOS 12.0 and up
Godot Engine - Feature-packed 2D and 3D open source game engine.
3uTools - 3uTools is a most efficient iOS file and data management tool for Apple users.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.