Idle - Rent Any Thing - A Peer-to-Peer Renting Community for Idle Goods
Fat Lama - Borrow stuff you need. Lend stuff you don't
Ruckify - peer-to-peer marketplace for rentals
Daylui.com - Daylui is an "Airbnb for everyhing else".
Sharbit - Rent the things you need from people nearby
Loanables - Find, compare and reserve stuff for rent