Synfig Studio - Just another WordPress site
OpenToonz - OpenToonz is an animation program that is a free software version of Toonz, the animation software...
Animation Paper - Animation Paper is a software package for doing 2D animation.
CrazyTalk Animator - CrazyTalk Animator, the next level of 2D animation. Create actors using any photo or illustration.
Adobe Animate - Adobe Animate is a Flash, vector animation software.
Spine - Spine is 2D animation software designed specifically for software and game development.