google adsense – Manage ads for my website

Any suggestions for an ad management system on my website? I would like to sell advertising space and be able to control the number of ad views, or the number of clicks that it should generate, set a start date and date. end, the pages that it can display, etc. to have ads to display, perhaps by default for AdSense?

The ability for ads that I sell to appear on another site using the same system could be a nice feature.