Snerdware has released Groupcal Viewer 1.0, which lets you subscribe to any Microsoft Exchange Calender directly from Mac OS X’s iCal application. The software is also designed to further extend the Exchange integration provided by Snerdware’s AddressX, which allows access to the Exchange Global Address List from Mac OS X’s Address Book. Calendars are made available on or offline in iCal. What’s more, when used with Apple’s iSync, Exchange calendars can made available on an iPod, Palm OS handheld, cell phone, or other iSync compatible device. Pricing starts at US$30 for a single user license.