Pivot Animator - Pivot Stickfigure Animator is a unique software, that allows you to create stick figure animations...
Synfig Studio - Just another WordPress site
Stick Nodes - Stick Nodes is an app that allows you to easily create your own stickfigure-based animations
Duik - Comprehensive animation and rigging toolset for Adobe After Effects
StickyPy - Stick figure animation program written in Python and PyGame
Limber for After Effects - IK system for After Effects using shape layers as limbs for character animation