Zimbra Desktop Alpha 0.53

Zimbra Desktop is the next generation leap forward for Web 2.0 applications- now you can have Zimbras Ajax-based collaboration experience online and offline. That means when you are out of the office without a connection (say, in a plane, train, or automobile), you can keep working without missing a beat. Write email, add new appointments, edit documents and when you re-connect changes will be automatically synced to the Zimbra Server.

Zimbra Desktop benefits:
The better overall usability of Web 2.0 (conversation view, tags, Zimlets) comes to the desktop; plus the web and desktop experience are now the same
Switch from online to offline mode seamlessly and automatically; when online you are immune to hiccups and interruptions caused by server latency
Faster search, better rich mail rendering, and a self-organizing inbox more adept handling larger email volumes than traditional clients (no more 2GB mailbox limits!)
Significantly reduced administration overhead managing and maintaining local files; they are synced to the Zimbra Server where they can be safeguarded
Fundamentally a cross browser, cross platform solution (Windows, Apple, Linux)
Expensive investments in proprietary clients are no longer required
Key features
Zimbra Desktop is available for you to try as an alpha version. We encourage you to take it for a test drive and provide us your feedback. Current feature highlights:

Full email support: compose, edit, delete, reply, or make drafts online and offline
Fast Zimbra search including Advanced Search builder
Access to calendar offline
Support for contacts, both locally stored and GAL
Easy set up wizard for account configuration
Existing user preferences (folders, signatures, settings, etc) are imported
Works with ZCS 4.5+ servers
Fast launch with automatic, transparent sync