AirEnvy - Rental Management for Airbnb
BeWelcome - Open your door to the world!
Naborly - Lets landlords screen tenants automagically.
Trustroots - Travellers community for sharing, hosting and getting people together.
Estate - A tool that texts you home valuations
Couchsurfing - CouchSurfing is your ticket to explore the world -- from the road or from your own home.