SIMH
| Open SIMH | |
|---|---|
| Developer(s) | Robert M. Supnik | 
| Initial release | 1993 | 
| Stable release | 3.12-3 
   / 31 January 2023 | 
| Repository | |
| Written in | C | 
| Operating system | Windows, Linux, macOS, FreeBSD, OpenBSD, NetBSD, OpenVMS | 
| Platform | x86, IA-64, PowerPC, SPARC, ARM | 
| Type | Hardware virtualization | 
| License | BSD-style licenses | 
| Website | simh | 
SIMH is a free and open source, multi-platform multi-system emulator. It is maintained by Bob Supnik, a former DEC engineer and DEC vice president, and has been in development in one form or another since the 1960s.