Ad serving software/script

Im looking for ad serving software I can use to rotate banners on my blogs

All I want to do is add tags in areas I want the banner served and then in a admin panel add/remove banners.. set ratio for showing banners etc

IS there any open source software like this? Or should I go with Double Click?

 

openads.org? It might be a bit of overkill, but you definitely shouldn't need to worry about hitting the extremities!

 

Thanks Twist I will have a look right away!

 

my personal favorite is phpadsnew. And it is opensource .

 

phpadsnew is now called openads.org, so we're talking about the same thing.

 

Ive come right with openads.. its very extensive and over the top.. but im getting used to it

Very powerfull