1)   Computer Lock Up 1.0
Computer Lock Up utility enables to lock computer access quickly as well as efficiently by means of password protection at the time the user is absent. The program maintains standard and transparent modes of computer locking.

 2)   Desktop Lock 1.0
Lock the computer to prevent people from accessing your system and documents.

 3)   Vinasoft Desktop Lock 1.0
Vinasoft desktop lock is best rated security PC desktop lock available

 4)   Deskman SE 6.0.1
Deskman SE is the most advanced, yet accessible, desktop security manager for Windows 2000/XP/2003.