StackAdapt - Native advertising demand side platform.
PubMatic - PubMatic is the marketing automation software that powers the advertising strategy for premium publishers.
Nativo - Nativo is an advertising technology platform for brand advertisers and publishers to scale, automate, and measure native ads
Google Ad Manager - Grow revenue wherever your users are with an integrated ad management platform that surfaces insights for smarter business decisions.
Adobe Advertising Cloud - Adobe Advertising Cloud is ads providing a platform that lets your media-related thing to lift on the high note.
OpenX - Ad technology platform available as a hosted service or as an open source download.