Stealthy: Secret Messenger - Chat anonymously with friends & strangers
Bunches - Start and discover free or paid group chats about anything
Roomvine - Chatrooms for real life venues, neighborhoods and events
nocnoc - Instant group chat invite via link
Jodel - What is Jodel all about? Jodel is the community that shows you what's happening in your area in real-time.
Reboard - Revolutionary multitasking iOS keyboard