On my HTC Touch Cruise phone, I’m using a Android Linux and WM6 dual-boot setup. Up to now, when using WM6 on my phone I used to sync my phone with OGGsync to sync with Google Calendar. The problem was that it was a limited version (no automatic syncing) if you didn’t pay for it, and I didn’t like the 10 euro fee. Not that it’s that much, but manual syncing was fine. Every once in a while I had an appointment that wasn’t synced yet, and I was late… Should have spent the 10 euros? Or not:
Now you can finally sync directly with Google under windows mobile. You can currently only sync contacts and appointments. For GMail you’d probably use IMAP anyway. All syncing is two-way.
It was worth the wait. It’s much more integrated and runs more smoothly than OGGsync.