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.

Micro.blog - Social network for indie blogs

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

kune - kune is a social network where you can communicate, collaborate and share between equals, using...

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

Diaspora - The online social world where you are in control.