Pencil2D is an easy, intuitive tool to make 2D hand-drawn animations. Pencil2D is open source and cross-platform.
GPL-2.0 License
Convert .tgs and .lottie to .webp or .gif using rlottie.
OpenToonz - An open-source full-featured 2D animation creation software
This is the Official source code repository of the Synfig project
Qt Node Editor. Dataflow programming framework
Animated sprite editor & pixel art tool -- Fork of the last GPLv2 commit of Aseprite