iLend - Keep track of the things you lend and borrow.
Citymapper - The ultimate transport app - iPhone / Android / Web.
Crowddy - A crowdfunding platform for american students in debt
TransSee - Real time transit prediction and bus tracker web app.
Masterworks - Invest in the world’s most valuable paintings.
BusWhere - BusWhere is a bus navigation application that is used to monitor the bus routes in real-time and you can get a notification when the bus is reaching your stop.