Ready Player Me - Personal 3D avatars for Mozilla Hubs
Avatar SDK - AI-powered 3D avatars from one photo
EMOJIZ - Animated 3D emoji set with source files
Boring Avatars - JavaScript library to generates SVG avatars based on text.
mocap4face - Realtime facial motion capture SDK enabling live animation of 3D avatars, NFT PFPs etc.
100 Free Userpics - Collection of a hundred free userpics especially for your design projects.