Postmodern.app - Anonymous, short, ephemeral conversations with others

Qwasap - A Telegram bot that lets you talk to people who are located anywhere in the world.

Roomvine - Chatrooms for real life venues, neighborhoods and events

Jodel - What is Jodel all about? Jodel is the community that shows you what's happening in your area in real-time.

Berkanan - Chat with people nearby. Even offline, on an ✈️.

Treadie - Create your own micro-social network for topics