Google Docs - Create a new document and edit with others at the same time -- from your computer, phone or tablet. Get stuff done with or without an internet connection. Use Docs to edit Word files. Free from Google.

WriteNext - The writing application that boosts your writing. Increase focus and writing performance and reduce distractions by separating your creative writing from other activities. Let writing be the only activity you perform in the writing application.

Microsoft Word - Microsoft Word is a commercial word document processor for Windows.

Stashany - Online notepad for developers

Apache OpenOffice Writer - Open-source word processor of the Apache OpenOffice suite.

Writebox - Writebox is a simple and distraction-free text editor for Chrome and iPhone/iPad.