How to build a private banner network?

Question

Internet advertising

There are several non-commercial sites with approximately the same focus (local tourism, local history, museums). I am looking for a tool to build a private banner network within this group so that site administrators can upload their own banners to the system and distribute them throughout the network.
The exchange of banners is supposed to be free of charge, so I don't want to get involved with commercial networks, but at the same time I want to have statistics on clicks and impressions within the group.
Are there ready-made tools for such tasks?

Answer 1

Try OpenX