It would be to Act or the current owner of the Act software company.

In short, I haven't seen PocketPC "sync" with Act. However I'm sure it can be done. A real problem is that PocketPC (PPC) makers don't develop ActiveSync themselves. That's all done by Microsoft. Unlike Palm which did make such sync programs to non-MS products for good reason, MS has no reason to sync to anything but MS software.

Bob