MOV video (requires Quicktime) or a series of PNG or JPEG still images. Your animation can be exported to animated GIF. Stykz provides several tutorial to get you started with your first animation, as well as detailed information for users that are switching over from Pivot. While similar in many ways, Stykz offers a completely different interface (multiple floating windows) along with in-scene editing, the ability to copy/paste figures, streching and distorting of elements, layer arrangements and more. In addition to cross-platform support it adds several feature enhancements along with the ability to import and use your existing Pivot (.stk) animations.
Stykz is a stickfigure animation program that was inspired by the popular Pivot Stickfigure Animator software.