lan manager

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

Lan Manager

   <operating system> {Microsoft}'s {OS/2}-based {network
   operating system}.  Developed in conjunction with {3Com}, Lan
   Manager runs as a task under OS/2.  Because of this, a {file
   server} may concurrently be used for other tasks, such as
   {database} services.  It offers good {mulitasking}.

   (1997-03-19)