ZoneOS ZoneScreen

Solution for extending your desktop display using displays of another computers (including Pocket PC), having network connection with main host. In some features it is similar to NetMeeting and Remote Desktop from Microsoft, allowing mirroring local desktop to another computer in the network.

The main difference is that it allows extend local desktop, not only mirroring it. Also, you could use ZoneScreen for Windows Mobile to extend/mirror your desktop to screen of your Pocket PC.