Party with a Local - Party with a Local is a free app that connects travelers with locals that want to party.
Roomvine - Chatrooms for real life venues, neighborhoods and events
Togetheo - Meet people nearby, who share your interests 🌍
Spectrum - Browser-based app to visualize the frequencies of an audio file.
Project Fixup - Meet people, not profiles
CityBugs - Improving cities to make them a better place to live in.