Roomvine - Chatrooms for real life venues, neighborhoods and events
Treadie - Create your own micro-social network for topics
Jodel - What is Jodel all about? Jodel is the community that shows you what's happening in your area in real-time.
CryptoInfluence.io - First crypto influencer community
Yakko - Anonymously post, comment, and interact with people at your university.
CityBugs - Improving cities to make them a better place to live in.