Grabb-It - Location-based ads on your Uber's window
DoubleClick for Publishers - Grow revenue wherever your users are with an integrated ad management platform that surfaces insights for smarter business decisions.
Spacewolff - P2P marketplace for ads. Turn excess space into ad space.
AdHitz - Lets you sell ad space on your site. You choose the details and then paste the code to your site.
Wrapify DIY - Launch + manage your own ads on cars nationwide
AdQuick - AdQuick allows you to run your own ad network similar to websites such as adbrite.com, adengage.