Edit note: CompanionLink can now synchronize with USB and Windows Phones.
CompanionLink has a long history of offering direct sync with all major smartphone platforms including Android, iOS, BlackBerry, Palm webOS, and the previous Microsoft Windows Mobile platform. When Windows Phone 7 was announced, we jumped to be the first to offer PIM synchronization for the platform.
Unfortunately, we discovered there is no way to interface with the device using USB protocol. Also, we lack the necessary app permissions to write contacts, calendar, tasks and notes to the device. Double-whammy; our hands are tied in two ways. Unfortunately, this means that CompanionLink, as well as any other third-party developers, won’t be able to offer direct sync to the Windows Phone platform until the tools are provided.
We’ve asked Microsoft about this issue, but have not yet received a reply. It’s possible Microsoft may open more options for developers in the future. We eagerly await that day!