Snappy is a fast, easy to use, cross platform screenshot/screencast application currently being written in Python. It will integrate with many services, allowing the user to quickly upload to YouTube/ImageShack/FTP/etc.
Flipbook is made to flip a sequence of images and allow you to study the resulting animation frame by frame. That's it, pure and simple. I will use Flipbook as the glue between my digital stills camera and a final animation. It will import JPEGs or PNGs