HamsterSync2 is a stand alone Windows application that synchronizes Google/Outlook 2007 contacts, and Google/Outlook Express contacts. Synchronization is based on contacts' full name. Synchronized fields include phone numbers, emails, addresses, and categories/groups, all other fields are not synchronized at this point.
HamsterSync2 uses non-erasing, merging method to synchronize between Google contacts and local contacts. No data will be deleted during the process; however, if target contact's storage is full, new information will not be added. This usually happens with local contacts (either Outlook Express or Outlook 2007), as Google contacts storage is dynamic can be extended as needed.
Because the synchronization way HamsterSync2 uses, you have to handle contacts and contact field deletion yourself. For example, if you want to delete if you want to delete one of Uncle Bob's phone numbers, or you have to delete the whole contact, you have to do it manually from both local and Google sides.