Tribeez - Flatshares, families, friends...

Raft Calendar - A fun and beautiful calendar for couples and close friends

ihatemoney - Manage your shared expenses, easily

Onin - Plan events without leaving the conversation

Ddays - Plan events with friends without the back and forth messages

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!