Notebook.ai - A smart notebook that grows and collaborates with you

Airborn - Create and edit documents online without sacrificing your privacy

Notebag - A keyboard-focused note-taking app that gets out of your way

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.

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.

Mellel - Home Page for Mellel: The word processor of choice for scholars, writers and long document writing. for Mac OS X and iOS.