What are some alternatives?
When comparing OpenX and PageFair, you can also consider the following products
AdSense - Earn money with website monetization from Google AdSense. We'll optimize your ad sizes to give them more chance to be seen and clicked.
VertaMedia - VertaMedia is a Supply-Side Platform designed to meet the demand for efficient ad serving technology and high yield optimization.
Google Ad Manager - Grow revenue wherever your users are with an integrated ad management platform that surfaces insights for smarter business decisions.
AppNexus - AppNexus technology powers the most innovative trading solutions and marketplaces for Internet advertising.
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.
AerServ - AerServ offers monetization solution for mobile publishers.