Open Source CRM - Options?

Hi,

I am working with a client (a media company) that is re-developing its
web publishing system.

I've already shortlisted potential CMS systems (including several open-
source options, such as Drupal and Joomla).

The brief requires a site that has sophisticated profiling capability,
particularly with respect to the ability to 'personalise' the site;
that is, recognise certain user preferences, and (where possible)
target content to individual user interests etc.

I am looking for examples of open-source CRM (or similar platforms)
used for this kind of profiling/personalisation, and would appreciate
any pointers readers of this newsgroup might be able to offer.

Please reply directly to me at mark.neely@gmail.com

Regards,

Mark