Ad server suggestions?

With openx having screwed the pooch yet again, and indicating that they may not resume service, and with OpenX no longer a one-click install here, can anyone recommend a good ad server for a small site (3 million ads per month) with low/no cost? Besides DoubleClick.

For a full holistic adserving solution that integrates RTB demand and big data analysis in a managed service solution with great support - look at Switch, With integrated RTB demand we pay our publishers - you make more money, cut costs and get to concentrate on your business. We provide a fast track service to help you ‘switch’ (excuse the pun) from OpenX On-Ramp. If this is of interest please contact me at

You can check the following ad servers:
Google DFP
Shiny ads