Cross Platform Groupware

[gboyce at badbelly.com (Gregory Boyce)]

On Fri, 25 Feb 2005, Josh Pollak wrote:

> Until we get a real sys-admin, I seem to be serving in that role at my new 
> company. Currently, we have an xserver managing our user accounts, email, and 
> mailing lists. I really like the xserve, but I'm starting to think we need 
> some form of groupware system. The trick is, we need something cross 
> platform. We have Linux, Mac, and Windows boxes here, and I am loath to 
> impose any sort of order on the client machines until absolutely necessary.
>
> The trouble is, I'm having a hard time finding good groupware solutions. 
> Exchange is out of the question, because its MS, because its expensive, and 
> because it sucks. I know there is Kolab, Citadel/UX, and the other projects 
> supporting GroupDAV, but making sense of all this is getting tricky.
>
> Ideally, this system would be supported by Mozilla, Firefox/Sunbird, KMail, 
> Evolution, Outlook, Entourage, and Mail.app. At the very least, it needs to 
> be supported by some client on each platform.

There was just a slashdot story on this exact topic yesterday:
http://slashdot.org/article.pl?sid=05/02/24/172207&tid=185

perhaps something there will help you out.