WinLTP can run up to 9 instances of itself on one computer.  Here two WinLTPs are running simultaneously.  Because of the low cost of National Instruments boards and WinLTP Advanced Mode software, running many WinLTP's at once becomes feasible.  Note that WinLTP2 has different color section bars (light blue versus the normal dark blue).

For more information see Section 10.2.8 in the on-line WinLTP Manual.