AdCenter 2000+ (PHP/MySQL)
AD Center 2000 is a CGI script for organizing your own Banner Exchange. Each participant in the Exchange can distribute his own banner ads across the Exchange, and the ads are displayed based on a system of credits. AD Center 2000 keeps track of all impressions and click-through stats for each clients and your clients can view the stats for their advertisement(s) online. AD Center 2000 also has a banner rotation feature to ensure even distribution of impressions for all clients.