Finally the time for a Free Groupware party.Having long been used to Lotus and Exchange and hacks to support them.Finally the nirvana of Free Groupware is happening.With KDE's backing it this sure looks like a winner. Though I am still alternating between kontact and evolution unable to decide which one sucks more.
There you go PCLinuxOnline: The Free Groupware Killer Solution for SMBs
Update: In the long run Kollab did not appear a viable challenger. Zimbra has had a lot more success based on the killer web-based e-mail app. they wrote.