Xpad is a sticky note application for jotting down notes.
Xpad is released under the terms of the GPL v3+.
Your distribution may already have a package for Xpad. It will probably be called xpad. If it doesn't have one, you can download the source and compile it yourself:
Or, download the very latest from bzr:
bzr branch lp:xpad
If you are interested in helping to translate Xpad, please do so via Launchpad.