Kontact - KNotes - This component serves as your infinite block of digital sticky notes.
Stickies - Stickies is a PC utility written to replace Post-It-style notes left stuck to your monitor.
Notezilla - Colorful & powerful sticky notes app for Windows & Phones.
GumNotes - GumNotes is a more efficient way of creating sticky notes for your computer. This free software allows you to create notes and attach them to the files they are specifically related to.
Scrawl - Scrawl is a notes taking and memo app that lets you keep track of the things that are important for you, like daily routine tasks, projects, reminders, calculations, or accountability of someone.
Tomboy - Apps/Tomboy - GNOME Wiki!