Ad Manager Pro is the most complete ad management solution available. It's a very flexible system, you can use it for one or more of these purposes:
Manage ads on your site(s)
Sell impressions and/or clicks to advertisers
Purchase impressions and/or clicks from publishers
These features may bring you an interesting income.
You and your users have a particular statistic on each ad (hourly, daily, monthly statistic), also a graphical statistic is available. Each ad may be used in up to 5 campaigns, each campaign can be configured separately.
Ad Manager Pro has a lot of advanced features, for example a support for any number of ad sizes, an option to use classic banners (jpg, png, gif, swf formats), plain text/HTML ads as well as ads based on templates. There is available a real time and historical statistic, advertising and publishing accounts, all public pages are based on templates (all pages are editable in any HTML editor) and many more. A list of the most important features can be found here.
Ad Manager Pro is written in PHP language and uses MySQL database. It means that the script is fast and can be used for high traffic sites.