Integrate Apple’s iCal and Exchange

Technically this has nothing to do with security, but it’s cool: Snerdware’s GroupCal lets you see and share calendar information between Exchange 2000/2003 servers and iCal users. This essentially makes iCal act just like Outlook’s native calendar client. I haven’t tried it yet, but I’m about to install it on my wife’s iMac and we’ll see how it works.