BIOS DOS/WINDOWS EMULATORS LINUX MACINTOSH NEWTON OS/2 UNIX VMS

ARDI
Information about Executor, a commercial Macintosh emulator for DOS, Linux, and NEXTSTEP. Free time-limited demos are available.

McGill Systems Inc.
TN3270 and VT420 emulator for Windows 3.x, 95, NT including full support for EHLLAPI, HLLAPI, and WinHLLAPI.

Zephyr Development Corporation
Develops and markets 3270 terminal emulation software for Microsoft Windows PC to IBM host connectivity.