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!
Respiray - Wearable air purifier that kills viruses with UV technology
Splittable - Shared living made simple
iLend - Keep track of the things you lend and borrow.
EquiTable - Split the bill fairly
Everfest - A global calendar and search engine for festivals