Airbnb - Book unique places to stay and things to do.
Idle - Rent Any Thing - A Peer-to-Peer Renting Community for Idle Goods
FlipKey - List your property with the world's largest travel community.
Fat Lama - Borrow stuff you need. Lend stuff you don't
June Homes - Rentals Redefined
CHARE - CHARE is a communications app available for Smartphones and Web Browsers.