Stealthy: Secret Messenger - Chat anonymously with friends & strangers
Asana - Asana project management is an effort to re-imagine how we work together, through modern productivity software. Fast and versatile, Asana helps individuals and groups get more done.
Roomvine - Chatrooms for real life venues, neighborhoods and events
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.
Jodel - What is Jodel all about? Jodel is the community that shows you what's happening in your area in real-time.
Basecamp - A simple and elegant project management system.