You Borrowed It - Keep track of who borrowed what and when you can expect it back
/Tab - The simple way to split a bill among friends.
LendList - Never again forget what you borrowed from someone and keep track of what your friends borrowed from you (Android app). - raphaelm/lendlist
Diggsweep - Easily create your own 'garage sale' to share with others
Outdoorsy - Find the best RV rental
PayPal.Me - Request money using your own personalized URL.