I saw a poster on TIGSource talk about manually cutting up sprite sheets, so I've dusted off a project from 2007 to solve it. Just load up a sprite sheet, select the background color, and export the results into a directory. It's got a few extra features useful for what I originally wanted it for, too.

Announcing my newest finished project, Box2DWith. I'm collecting together various utility classes for doing all the stuff with Box2DFlashAS3, but found annoying. Demo, Docs

I've not posted for a while, but that doesn't mean I've not been doing anything. Generally less visible stuff (yes, some porting), but I have converted Box2DFlashAS3 to use ASDoc to generate beautiful documentation.
The results are available here. For lack of a better place, this will be their permanent home, and I'll try to keep them updated to the latest revision.

I've put in a few customizations to the standard ASDoc template, that I'm going to share here, as they are generally useful. You will need to customize the files a bit for your own project, though.