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OpenX is an open-source advertising server that is licensed under the GNU General Public License. It features an integrated banner management interface and tracking system for gathering statistics. The product enables web site administrators to rotate banners from both in-house advertisement campaigns as well as from paid or third-party sources, such as Google's AdSense.

With over 50,000 publishers serving more than 300 billion ads per month, OpenX is the largest publisher-side ad server in the world.

The OpenX Enterprise ad server delivers world-class ad serving functionality, backed by OpenX support and professional services.

  • OpenX Market - OpenX allows any publisher to sell directly to ad buyers through a real-time auction with no entry fee or technology integration required.
  • OpenX Real-Time Selling™ - OpenX is the first company to allow any publisher to sell directly to major real-time bidders.
  • OpenX seamlessly combines ad serving and ad network optimization across all revenue channels, including guaranteed, non-guaranteed, and unsold.
  • OpenX is flexible. Extensible open source technology and flexible business terms make doing business with OpenX easy.



OpenX began as phpAdsNew, a fork from a similar project called phpAds, created by Tobias Ratschiller in 1998. When the phpAds project came to a halt in 2000, Wim Godden decided to create phpAdsNew by expanding the project with new features. He hoped the 'New' moniker would be temporary, lasting only until Ratschiller could update the phpAds website. Unfortunately, this only happened years later, after the name phpAdsNew was too well established to be changed.

During the time period between 2001 and 2002, Wim Godden led the phpAdsNew project and later received help from developers such as Niels Leenheer and Phil Hord, continually adding new features and improving the existing ones. After the release of version 1.9, a completely revised version 2.0 was created. This task was led by Niels Leenheer. The new version included many new features as well as a revised graphical user interface.

After gaining in popularity and earning support from the open-source community, the project was renamed to OpenAds. Features that were built for phpAdsNew 2.0 were also integrated into the latest OpenAds software, which at this point had reached version 2.3.

When version 2.4.4 was released in 2007, OpenAds was once again rebranded under a new name: OpenX.

Feature set

OpenX provides standard banner rotation, click tracking, zone-based ad selection, zone-based campaign targeting, direct ad selection, ad targeting (per browser, domain, language, etc), ad capping and full Adobe Flash support.

License and cost

OpenX is published under the GNU General Public License and is thus free software.

External links

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