zNotes VS Tomboy

Pystickynote - Stickynotes for your desktop easily from the command line.

OneNote - Get the OneNote app for free on your tablet, phone, and computer, so you can capture your ideas and to-do lists in one place wherever you are. Or try OneNote with Office for free.

Stickies - Stickies is a PC utility written to replace Post-It-style notes left stuck to your monitor.

CherryTree - A hierarchical note taking application, featuring rich text and syntax highlighting, storing data in a single xml or sqlite file.

KingSumo - Grow your audience with viral giveaways that cut marketing costs

Turtl - The secure, collaborative notebook