Pocket VirtualBoss 3.68(47)
the author of this app says:
This program can be used as a stand-alone program on your Pocket PC, or you can synchronize with PC VirtualBoss on your desktop. Edit, add and filter items (tasks, contacts, and jobs) when you are away form the office. When you return to your office, you can synchronize all the changes you made on both PC VirtualBoss and Pocket VirtualBoss.