Zemanta - Zemanta is an online content and links suggesting platform that provides a plugin to the bloggers, publishers and other types of content creators.
AdvertServe - AdvertServe combines everything you need into a unified ad serving platform for web, mobile, e-mail, and video.
StackAdapt - Native advertising demand side platform.
Kevel - Kevel's APIs make it easy for engineers and PMs to quickly launch a fully-customized, white-labeled, server-side ad server.
Nativo - Nativo is an advertising technology platform for brand advertisers and publishers to scale, automate, and measure native ads
Brightcom - Brightcom is a global ad tech company offering multi channel advertising solutions.