Public - Group chats.
Stealthy: Secret Messenger - Chat anonymously with friends & strangers
Chalk - Chalk is a calculator that tries to do right what others do wrong.
Roomvine - Chatrooms for real life venues, neighborhoods and events
SoChat - Chat with everyone
Jodel - What is Jodel all about? Jodel is the community that shows you what's happening in your area in real-time.