Couchers.org - The new alternative to Couchsurfing. Non-profit. Community-focused. Well built.
Party with a Local - Party with a Local is a free app that connects travelers with locals that want to party.
Couchsurfing - CouchSurfing is your ticket to explore the world -- from the road or from your own home.
Cool Cousin - Shaking up the travel world with good old human connection
Trustroots - Travellers community for sharing, hosting and getting people together.
Triip.me - The happiest way to travel in 227 countries