Waver - Description: Google Wave is a great way to communicate and collaborate. Waver lets you:
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.
Rizzoma - Email and IM are linear contextless communication tools.
Notion - All-in-one workspace. One tool for your whole team. Write, plan, and get organized.
BSI Knowledge Manager - Central document management & knowledge base
Slack - A messaging app for teams who see through the Earth!