What are some alternatives?
When comparing PubMatic and OpenX, you can also consider the following products
Google Ad Manager - Grow revenue wherever your users are with an integrated ad management platform that surfaces insights for smarter business decisions.
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.
AerServ - AerServ offers monetization solution for mobile publishers.
AppNexus - AppNexus technology powers the most innovative trading solutions and marketplaces for Internet advertising.
ONE by AOL - Ad Serving and Supply Side Platform (SSP)
Smart AdServer - The only fully-integrated ad server for managing RTB, Mobile, Video & Web display. Best manage all your campaigns in one interface. Best local support