Cemu is a Wii U emulator
cycle exact emulator
Portable ZX-Spectrum emulator based on UnrealSpeccy 0.37.3 by SMT
A portable, open-source (GPLv2) 8086 PC emulator.
portable o2em launcher
A portable library and tools for archiving images of Atari 8-bit tapes
Multi-System Emulator
A Raspberry Pi emulator for Mac OS X and Linux
Apple II GS emulator based on Kent Dickey's KEGS
Highly portable Gameboy Color emulator
Portable Pokémon Mini Emulator
Scriptable frontend for media applications.
Entex Adventure Vision emulator with debugging capabilities.
z390 Portable Mainframe Assembler and Emulator
Oric-1/Atmos/Telestrat/Pravetz 8D Emulator