Easy Ads displays AdSense and its alternatives on your blog pages and sidebar widgets: Chitika, BidVertiser, Clicksor etc. Simple yet flexible.
Injects any adverts (e.g. AdSense) into the WordPress posts or widget area. Restrict who sees ads by post length/age/referrer or IP.
AdButler WordPress Plugin - Simplify deployment of your ad zones with this highly efficient widget based ad deployment plugin
Rotate adsense(or other ad) units in alternating positions in your single posts (pages optional)