RentHoop - Tinder for finding roommates
Inscovery - Discover unique Instagram users that share your interests
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!
Roundio - Explore what people posted to Instagram or Flickr near you
Pack - Makes it simple to find the best roommates.
Instaround - A simple app to find Instagram photos and people around you.