how to replace outlook/exchange for corps?

[Craig White]

On Thu, 2005-12-01 at 12:32 -0800, Josh Coffman wrote:
> I've wonder about this to myself, and a recent OSDL
> survey showed corp email/calendar app as being a key
> to linux adoption.
> 
> http://linux.slashdot.org/linux/05/12/01/1731206.shtml?tid=126&tid=106
> http://www.desktoplinux.com/news/NS5481370522.html
> 
> I use Outlook at work a lot for
> email/meetings/contacts. I played around with a couple
> email clients on my fedora bozes at home, but nothing
> really had a complete solution. Evolution was probably
> the closest but I don't run a mail server at home so
> could really evaluated it fairly.
> 
> Anyone know email/calendar/contact solutions for the
> linux corp desktop?
----
There are tons but the question isn't really qualified so the answers
would be exhaustive.

Open source or proprietary?
Single fat client like Evolution/Outlook?
Web based clients?
Open standards or proprietary standards?
Email shared?
Calendar shared?
Contacts shared?
Content Management?
Wiki?

Craig