[alug] new linux company to be based in Norwich

Hello We are to develop a series of mass user content driven (with editorial control) internet start ups in the uk/norwich, using open source on the linux platform, we are struggling to find a particular solution to one of our needs, ie content management. do you know of any open soure software that is similar or close to the following CM software http://www.eprise.com/products/ any help would be greatly appreciated, there may be other reasons to talk/meet soon. Regards Paul Stiles