StackAdapt - Native advertising demand side platform.

Contextly - Contextly provides content recommendation system for publishers.

Nativo - Nativo is an advertising technology platform for brand advertisers and publishers to scale, automate, and measure native ads

Reddit - Reddit gives you the best of the internet in one place. Get a constantly updating feed of breaking news, fun stories, pics, memes, and videos just for you.

Zemanta - Zemanta is an online content and links suggesting platform that provides a plugin to the bloggers, publishers and other types of content creators.

Pixfuture - Pixfuture is a self serve advertisement platform for advertisers and publishers.