Oleansoft Hidden Camera is an employee monitoring software that allows you to view desktop capture of up to 250 computers simultaneously. The program provides a thumbnail size preview (size depends on number of monitors) as well as a full size view of the desktop. You can choose between a view-only mode and a record mode, which will automatically save screen captures into an archive for later review. In addition to the desktop captures, Hidden Camera also allows you to send a simple text message to an employee. The program must be installed manually on each computer to be monitored (requires a license for each).