Hacker News with Generative AI: 2D Animation

Synfig Studio – Open-Source 2D Animation Software (synfig.org)
Synfig Studio is a free and open-source 2D animation software, designed as powerful industrial-strength solution for creating film-quality animation using a vector and bitmap artwork.
Spine – 2D skeletal animation for games, with physical secondary motions (esotericsoftware.com)