Fractal Sketchpad
Other useful commands: 'z' to undo (sorry no redo yet), right-click on palette to change background color.
It may take a while to render at higher recursion levels.
A lot can be done with a single horizontal or vertical line, and a couple of control lines.
To be able to save, you need the desktop version: windows, mac, linux.
If you do save any good ones, post them to flickr and let me know.
Send invisibleelephant an email at yahoo.com if you want to reach me.
Built with Processing