Synfig Studio - Just another WordPress site
Animation Paper - Animation Paper is a software package for doing 2D animation.
Live2D Cubism - Live2D is the world's first drawing technology to enable 3D rendering of 2D images.
CelAction 2D - CelAction 2D is the name of a powerful and highly advanced 2D animation program for the perfect creation of 2D animation.
Creature - Creature 2D Skeletal and Mesh Animation Tool
CrazyTalk Animator - CrazyTalk Animator, the next level of 2D animation. Create actors using any photo or illustration.