I haven't really talked much about it here, but I'm working on an open source alternative to Live2D which allows you to rig 2D characters (through layered images) for use in real-time animation in games and vtubing. It's optimized for complex animation, so recommended for stuff like visual novels, and again vtubing.

You can find the project here
https://github.com/Inochi2D/inochi2d