BasicBoy: An open source emulator for Windows written in Visual Basic 6 and VB.NET.
BGB: A freeware emulator for Windows.
Boycott/MacOS: Boycott port for MacOS.
BoycottAdvance/SDL: Multi-platform emulator available for Linux, BeOS, WIN32 and FreeBSD.
cingb: Open source emulator for DOS and Unix.
confusionGBx: A freeware emulator for Windows.
D-Boy: Freeware emulator for DOS.
Game Lad: Freeware emulator/debugger for Win32/DX8.
Gameboy 97: Open source emulator for DOS.
GBE: Open source port for AmigaOS.
GBMac: Shareware emulator for MacOS.
Geek.com: Goby: Review of a commercial emulator for EPOC.
GEM: A freeware emulator for MSX-DOS2 written in assembly.
GEST: An open source emulator for Windows.
GEX: A freeware emulator for Windows.
Gngb: Open source emulator for Linux using SDL.
GooBer: An open source emulator for Linux.
HelloGB: Freeware emulator for Win32.
KGB: Freeware emulator for Win32.
KiGB: A freeware emulator for DOS, Linux/i386, MacOS, and Windows.
NO$GMB: Shareware emulator for DOS and Win32.
Phoinix: An open source (GPL) emulator for PalmOS.
PlayGuy: A freeware emulator for Windows.
QuantumGB: Freeware emulator for DOS.
TGB: Freeware emulator for Win32.
Victoly Boy: Freeware emulator for MacOS.
Virtual GameBoy: Commercial emulator for Win32 and freeware emulator for AIX, FreeBSD, Irix, Linux, MacOS, OS/2, OSF/1, Solaris, and SunOS.
Wzonka-Lad: Shareware emulator for Amiga.