Zimbra, one of the most popular web-based office suites, has just announced Zimbra Desktop – which provides offline access to the AJAX-powered product.

Offering offline access is a growing trend amongst product developers, and obviously a feature the users are longing for. Firefox 3 will be implementing offline access to AJAX applications and a number of other companies are launching their own solutions (Adobe’s Apollo, Joyent’s Slingshot, and Dekoh).

Zimbra Desktop will allow users to access their email, calendar, contacts, and documents while away from an internet connection. When users come back online – all changes are then synced to their online counterparts.