1)   Aster XP2.5T
ASTER is a program (and only a program!), which enables several users to work with one computer as independently as if each of them had their own PC. ASTER is a software solution and does not use thin clients and terminal stations.

 2)   Userful Multiplier 3.7
Userful Multiplier multiseat Linux virtual desktop software turns 1 computer into 10 using extra video cards, keyboards, and monitors. Installs on the leading Linux distributions (Ubuntu, RedHat, Novell/SuSE, Fedora, Mandriva, Xandros, etc.).