The software also supports a number of other third party programs such as Microsoft Entourage (Outlook equivalent on Mac OS X) and Chronos SOHO Organizer.
Nokia does provide a number of tools for Mac users such as plug ins for iSync and Nokia Media Transfer. However Missing Sync provides an all round solution and has additional functionality. It will also be very welcome for UIQ 3 users (Sony Ericsson and Motorola) who currently have limited Mac connectivity options.
Missing Sync is currently available for the other major mobile platforms including Windows Mobile, Palm and Blackberry. I know it is popular among Mac and Windows Mobile users who have told me they value it stability and ease of use.
Mark/Space are looking for feedback on what users would like to see in the product. To participate in this process you should take this survey.
Here is a screenshot from the Windows Mobile version of Missing Sync:
