From Green Eclipse Software:
StickyPad is an invaluable, easy-to-use tool that lets you place sticky notes on your desktop. You can type notes to yourself, set meeting and appointment reminders, keep track of a to-do list, and anything else you would do with paper notes. Your notes can be printed, pasted into other applications, or emailed to coworkers. You can even make notes translucent and have them float above your other windows, so you can see both your note and what you are working on. When you log off, StickyPad remembers all of your notes, and when you log back on, your notes are still there. Once you try it, you won't want to work without StickyPad again.
What's new in this version:
Version 2.3.52 has added default reminder sound and fixed minor bugs on non-English systems.