OpenX Ad Server

From OpenX:

OpenX Ad Server is a powerful open source platform that manages advertising for more than 150,000 websites in over 100 countries. More than 300 billion ads run through OpenX Ad Servers each month. And since it's available as a software download or as a hosted service, you can decide to run it yourself or let us take care of managing the infrastructure for you. OpenX Ad Server lets you organize and manage all of your ad inventory under one easy to use interface no matter how many websites you have. It works with all kinds of ad formats, ranging from simple banners to rich media. And it's designed to deliver your ads as fast as possible, regardless of the number of ads on each page. With OpenX Ad Server, you can manage and target your ads any way you want. Use prioritization controls to optimize how your ads are delivered. Use frequency controls to limit how often campaigns are shown. And use targeting to serve the most relevant ads to your audience. There's no limit to the flexibility you have over the delivery of your ads. OpenX Ad Server's extensive set of reports provides comprehensive statistics on your websites and ad zones as well as your advertisers and ad campaigns. Get detailed breakdowns on ad delivery, conversions, revenue. OpenX Ad Server has many additional features that provide you with ultimate control and flexibility over all facets of your ad serving needs. And with our unique plugin framework, virtually anything can be built on top of the core product, including extended functionality around advertisers, ad types, third party data.

Version 2.8 comes with a new plug-in API.

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