Greenboard - Generate beautiful static api documentation

Ulysses.app - A powerful writing tool for Mac, iPad, and iPhone

Archbee.io - Archbee is a developer-focused product docs tool for your team. Build beautiful product documentation sites or internal wikis/knowledge bases to get your team and product knowledge in one place.

Blurt - Compose efficiently. Edit smartly. Stay on track. Blurt is all you need to write — in one sleek tool.

You Need A Wiki - Create a wiki with Google Docs

X (Twitter) - Connect with your friends and other fascinating people. Get in-the-moment updates on the things that interest you. And watch events unfold, in real time, from every angle.