SIMH Emulator of various old computers.
Can emulate machines:
- Data General Nova, Eclipse - Digital Equipment Corporation PDP-1, PDP-4, PDP-7, PDP-8, PDP-9, PDP-10, PDP-11, PDP-15, VAX - GRI Corporation GRI-909, GRI-99 - IBM 1401, 1620, 1130, 7090/7094, System 3 - Interdata (Perkin-Elmer) 16b and 32b systems - Hewlett-Packard 2114, 2115, 2116, 2100, 21MX, 1000 - Honeywell H316/H516 - MITS Altair 8800, with both 8080 and Z80 - Royal-Mcbee LGP-30, LGP-21 - Scientific Data Systems SDS 940 - SWTP 6800.