JustNotepad.com - A free online notepad allows you to create any text or notes in your web browser.
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.
NoteAway - NoteAway is the simplest, most convenient way to take quick notes on OS X.
Simplenote - The simplest way to keep notes. Light, clean, and free. Simplenote is now available for iOS, Android, Mac, and the web.
PlicPad - Shareable notepad without urls
Laverna - Laverna is a JavaScript note taking application with Markdown editor and encryption support.