Overnight - Book a last minute room with locals, in seconds.
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.
Nightly - One part dating, one part social, one part nightlife
Trustroots - Travellers community for sharing, hosting and getting people together.