Exchange Alternatives

A CPA I do work for is replacing their old server. It is running Exchange but they only used Exchange for the shared Calendar. The email is just pop accounts.

The boss wants to know if we can fore-go Exchange and use something else to share a Calendar and contacts. He would also like the calendar to export to a handheld. A local area solution or a web-based one will be considered.

Does anyone know of the options to consider?

www.desknow.com
I was looking at that recently... could fit what you need...

I found it by searching for "free colaboration software" in google....

hope it helps...