What are some alternatives?
VertaMedia - VertaMedia is a Supply-Side Platform designed to meet the demand for efficient ad serving technology and high yield optimization.
Google AdSense - Use Google AdSense to make money online by placing ads on your website and YouTube channel. Start monetizing your website with Google AdSense today.
Atlas by Facebook - Atlas by Facebook is an ad serving platform that also offers tools for marketers to serve, manage, track, and measure their campaigns.
PageFair - An ad serving technology for premium publisher and media groups.
Epom Ad Server - An ad serving solution for publishers, advertisers, ad and affiliate networks
Hooklogic - HookLogic provides closed-loop marketing for brand advertisers through its partnerships with leading retailers and travel companies.