Roomvine - Chatrooms for real life venues, neighborhoods and events
Spectrum - Browser-based app to visualize the frequencies of an audio file.
Jodel - What is Jodel all about? Jodel is the community that shows you what's happening in your area in real-time.
CityBugs - Improving cities to make them a better place to live in.
Yakko - Anonymously post, comment, and interact with people at your university.
Berkanan - Chat with people nearby. Even offline, on an ✈️.