Emulators

Emulators:

See also:

Altair32 - An open source Altair emulator for Windows.
blueMSX - An open source SVI318/328, MSX1, MSX2, MSX2+, and Turbo-R emulator for Windows.
cinc - An open source Bell Labs cardiac emulator for Linux and Windows/Cygwin.
CP/M - An open source CP/M-80 ver2.2 emulator for MacOS.
Desktop Cyber - A CDC (Control Data Corporation) Cyber 6x00, 7x or 17x type mainframe emulator for Windows or Unix.
Emu28 - An open source HP18C/28C emulator for Windows.
Emu48 - An open source HP38/39/40/48/49 emulator for Windows.
Emu51 - An open source 8051 emulator for Linux and Windows.
Emuviews - Great emulation page maintained by JoseQ, maker of the famous Rumor Mill, many downloads, great layout - some hosted sites.
Evenson Consulting Services' SWTPc 6800/6809 Emulator - Windows 9x/NT GUI emulation of SWTPc 6800 and 6809 systems. A Simulated Machine Environment (SME) emulation plus .dsk file downloads.
Free42 - Open source HP-42S emulator for Linux/i386, Mac OS, PalmOS, Pocket PC, Windows, and Zaurus X/Qt.
FunnyMu - A freeware Creativision, Funvision, and Whizzard emulator for Linux/SDL.
GXemul - An open source full-system computer architecture emulation framework for Unix-like systems. Screenshots, download, and documentation.
HiRISC Simulator - A freeware emulator for Windows of a system designed specifically for the Applied Systems Programming course at the University of Akron.
Japanese Computer Emulation Centre - A site dedicated to the emulation of Japanese Machines including X68000, PC6001, PC88, PC98, MSX 1/2/R, Sharp MZ, Sharp X1, Fujitsu FM7, and Fujitsu FM Towns.
KCemu - An open source emulator of the KC85 homecomputer series for Linux and Windows.
mic1 - A Java-based simulator which implements the Mic-1 microarchitecture described in Chapter 4 of Andrew S. Tanenbaum, Structured Computer Organization, Fourth Edition. Open source, GPL
PearPC - An open source PowerPC emulator for Unix and Windows.
Project8080 - Covers the development of a Heathkit H8 emulator on Macintosh.
SIMH - An open source collection of emulators for Windows of historical computers, including GRI-909, HP 2116/2100/21MX, IBM 1401/1620/1130/System 3, PDP-1/4/7-11/15/VAX. Also provides software kits, system photographs, and technical papers.
Solace - An open source Sol-20 emulator for Windows.
SPRINT - A freeware Sprinter emulator for Linux/i386 and Windows.
st20emu - A freeware ST20 emulator for DOS.
TinyELF - A freeware emulator of CDP1802 based microcomputers for Mac OS X.
uBee512 - Open source Premium Microbee 512Kb FDD emulator for Linux and Windows.
Virtual Alpha Micro - An open source AM-100 micro computer emulator for Cygwin, Linux, and Mac OSX.
vmips - An open source MIPS R3000 emulator for Unix.
XRoar - Open source Dragon 32/64 and Tandy CoCo emulator for GP32, Linux, MacOS/PPC, Nintendo DS, and Windows.