TheWhippinpost - 8:31 pm on May 5, 2006 (gmt 0)

Have a look at Civicspace, built a-top, but not a fork of, Drupal.

It has an additional (optional) module called (IIRC) CivicCRM.

It (Civicspace) started off as a project to help activists in the last presidential race stay organised but has now gone beyond that.

CivicCRM however, is a recent addition which I haven't played with it so can't/won't vouch for it, though it has existed for some time apparently.

As far as the SEO aspects of CS are concerned: No complaints. In fact, once you get your head around taxonomy theory, it's probably the strongest and most flexible API (included) around.

But of course, they all come with the caveat of whether it will serve your specifics. Also, with flexibility, comes a learning curve... in the case of CS/Drupal, it's the concept of taxonomy. Once the penny drops however...!