mtos

from The Free On-line Dictionary of Computing (8 July 2008)
MTOS

   1. <operating system> A family of {real-time} {operating systems}
   for use in {embedded  systems}.	 It is	developed and marketed by
   {Industrial Programming, Inc.}.

   2. <operating system> {MultiTOS}

   (1997-06-03)
    
from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)
MTOS
       Magnetic Tape Operating System (OS, Datapoint)
       
    

[email protected]