The original IBM PC and other machine emulations in JavaScript
Apple 2 and Agat 7/9 emulator
Yet another system region and language simulator
x86 Multi-Core Microprocessor and assembler simulator written in C++
Atari 2600, C64, Python, 3D engines and rock'n roll
Software to simulate a Digital Oscilloscope
a very fast full system simulator
Apple1 Emulator for the terminal with cut and paste.
MILE - MIPS Interactive Learning Environment