Tomboy

Tomboy is an application that will let you write down any idea or reminder note on your desktop in the easiest way possible.

The program's main window will always be visible in any part of the desktop you choose, letting you access all the notes you've created so far, sort them by importance and, of course, create new ones.

You can also anchor the most important notes to your desktop for easier reference, as well as include links to access different websites directly from Tomboy.

If you need a note-taking tool that's user-friendly and effective, then look no further: Tomboy is a great choice.