Spacewolff - P2P marketplace for ads. Turn excess space into ad space.
Marin Software - Optimize your Search, Social & Display ads across channels and devices. Marin Software, the leading cross-channel performance advertising platform.
Wrapify - Connecting drivers + brands to create on-vehicle advertising
Google Marketing Platform - Google's unified and improved marketing and analytics tools.
Grabb-It - Location-based ads on your Uber's window
Kenshoo - Kenshoo provides marketing software and empower marketers with technology to build brands and generate demand across all media.