Forum OpenACS CMS: Response to Some commercial products for comparison

we have got ver good experience with midgard content management system
based on apache, php, mysql - but also with oracle and java.
there is a nice replication mechanism, and already modules such as forums, email, statistics, etc.

sites that we built so far:
24on.cc
Cornettosoft
Hotelkritiken.com

for more info go to midgard site or check out our site [CSO Lanifex]