Stickies - Stickies is a PC utility written to replace Post-It-style notes left stuck to your monitor.
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.
TopXNotes - TopXNotes is a personal notes and information organizing tool that you can use on iOS or Mac OS.
Evernote - Bring your life's work together in one digital workspace. Evernote is the place to collect inspirational ideas, write meaningful words, and move your important projects forward.
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.
NoteLedge - Multimedia Notepad , Stay Organized and Make Beautiful Notes