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.

Notezilla - Colorful & powerful sticky notes app for Windows & Phones.

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.

Notepadqq - Notepadqq is a linux clone (identical application) of Notepad++

AllMyNotes Organizer - AllMyNotes Organizer is a multi-functional hierarchical information manager for Windows.

Simplenote - The simplest way to keep notes. Light, clean, and free. Simplenote is now available for iOS, Android, Mac, and the web.