FiveNotes

FiveNotes is a small text editor that you can always access by clicking on its status bar icon or pressing shortcut keys.

It is a great alternative to creating small text files for simple, temporary notes. You don't have to worry about files, their names, and saving them. What you write in FiveNotes, it remains there. If you need to write something quickly (for example a phone number), you just open FiveNotes and write it.