Ajax Apps... Check out Zimbra - email, calendering, and collaboration

I have been reading a bit about Ajax lately and have been impressed by some of its capabilities. New applications are popping up all over the web these days. A good friend, Dan Grossman, recently posted about the top ten Ajax Applications.

He has a great list, but I think he might want to check out Zimbra. Their demo is very impressive and I imagine the interface might be quite fast given the capabilities of Ajax. good work guys.