GMobileSync is a free software for Pocket PCs and smartphones running Windows Mobile 5.0, that synchronizes Google Calendar with PocketOutlook. The software doesn't require Outlook on your desktop.Some features:
* Choose a range of days to sync based on today's date
* Remove all Google Calendar events from PocketOutlook without deleting any manually entered events
* Automatically exit GMobileSync when synchronization is complete
* Supports recurring events.
In the current version (1.2), changes made in PocketOutlook aren't added to Google Calendar, but this should be fixed in GMobileSync 1.3, that will be released next Monday.
{ Thank you, Tijir. }