This is a list of online advertising technology companies.

4INFO Adbot Adform Adobe Systems ADTECH Adtile Technologies Afilias Alawar Entertainment Amazon.com AppLovin AppNexus Badgeville BrightRoll Comcast Advertising comScore Criteo Daylife Digital Element dotMobi eBuddy eDirectory Enplug Facebook Fiksu Fluent, Inc. Google Inc. InMobi Integral Ad Science Kidoz Marin Software Matomy Media mBlox Media.net Metaverse Mod Squad Neustar Newsmax Media Nielsen Holdings OpenMarket OpenX Optimal Payments OrangeSoda Oracle Corporation Perion Pubmatic Quantcast Rapleaf Rocket Fuel Rubicon Project Sedo Sitecore Smaato Softlayer Softonic Sony DADC Taykey The Trade Desk Triton Digital TubeMogul Unified Velti Venable LLP VideoAmp Yippy YuMe ZEDO Zeta Interactive