Well, I finally got around to cleaning up the code in my pop-up JPEG image editor this weekend. The editor was originally integrated into a content management system I built for a client two years back, but the new code structure ought to make dropping it anywhere fairly easy. It currently has no documentation, but if you download the source, you’ll see that there’s not much to getting it up and running.
I’ve decided to release the code under the GNU Lesser General Public License, so have at it! If you find it useful, I’d love to hear how/where you’re using it.