AdServerBeans MyAds - Open Source Ad Server

ASB MyAds is an ad server for publisher. You can use it to quickly set up ads on your site by defining display priorities, targeting and capping options. It supports image, html and flash ads. Geo targeting the Ads by country, continent, city is possible. It keeps track of user action and generates reports for views, clicks, CTR.

Code location: http://code.google.com/p/asb-myads/