» Flexemu
An open source EurocomII/V7 emulator for Linux and Windows.
http://geocities.com/flexemu/
» Free42
Open source HP-42S emulator for Linux/i386, Mac OS, PalmOS, Pocket PC, Windows, and Zaurus X/Qt.
http://free42.sourceforge.net/
» FunnyMu
A freeware Creativision, Funvision, and Whizzard emulator for Linux/SDL.
http://www.lemoncube.com/26.html
» GXemul
An open source MIPS machine emulator for Linux.
http://gavare.se/gxemul/
» HiRISC Simulator
A freeware emulator for Windows of a system designed specifically for the Applied Systems Programming course at the University of Akron.
http://www.cs.uakron.edu/~margush/307_Old/HiRISC/
» James the Animal Tamer's Emulators
Freeware APF, Aquarius, Exidy Sorcerer, Interact Family Computer, MC-10, NEC PC-6001A, Panasonic Personal Computer, and TRS-80 emulators for Windows.
http://www.geocities.com/emucompboy/
» 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.
http://www.jcec.co.uk/
» KCemu
An open source emulator of the KC85 homecomputer series for Linux and Windows.
http://kcemu.sourceforge.net/
» PearPC
An open source PowerPC emulator for Unix and Windows.
http://pearpc.sourceforge.net/
» 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.
http://simh.trailing-edge.com/
» SPRINT
A freeware Sprinter emulator for Linux/i386 and Windows.
» TinyELF
A freeware emulator of CDP1802 based microcomputers for Mac OS X.
http://homepage.mac.com/ruske/tinyelf/
» Virtual Alpha Micro
An open source AM-100 micro computer emulator for Cygwin, Linux, and Mac OSX.
http://www.otterway.com/am100/
» XRoar
An open source Dragon 32/64 and Tandy CoCo emulator for Linux , MacOS/PPC, GP32, and Windows.
http://www.6809.org.uk/dragon/xroar.shtml
» blueMSX
An open source SVI318/328, MSX1, MSX2, MSX2+, and Turbo-R emulator for Windows.
http://www.bluemsx.com/
» cinc
An open source Bell Labs cardiac emulator for Linux and Windows/Cygwin.
http://sourceforge.net/projects/cinc/
» 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]