Stealthy: Secret Messenger - Chat anonymously with friends & strangers
Undagrid - Create mesh networks with physical (unpowered) things
Roomvine - Chatrooms for real life venues, neighborhoods and events
FaceCat - Chat anonymously with your friends
Jodel - What is Jodel all about? Jodel is the community that shows you what's happening in your area in real-time.
Bubi Chat - Location based anonymous chatting app