HeadRoom is a DOS context switching and multitasking memory manager produced by Helix Software Company in the late 1980s and early 1990s.
The HeadRoom Network Extensions intercepted and buffered NETBIOS and TCP/IP communications requests, allowing HeadRoom to manage network communications software such as mainframe Terminal Emulators and e-mail programs.
HeadRoom would reactivate the swapped-out programs when activity occurred on the NETBIOS or TCP/IP sockets.
[4] In October 1989,[5] Helix Software released HeadRoom v2.0 which included support for Microsoft Windows and LIM EMS v4.0.
[7] In January 1991, Helix released the final version of Headroom, v2.03 and thereafter incorporated HeadRoom's features into its Netroom LAN memory manager, a decision which caused market confusion.