Inscovery - Discover unique Instagram users that share your interests
RentHoop - Tinder for finding roommates
Roundio - Explore what people posted to Instagram or Flickr near you
Splitwise - Splitwise is a free tool for friends and roommates to track bills and other shared expenses, so that everyone gets paid back. On the web, iPhone, and Android!
Instaround - A simple app to find Instagram photos and people around you.
Pack - Makes it simple to find the best roommates.