• compatible with Psion 3a, Psion 3c and Psion 3mx
  
• highly optimized emulation core written completely in assembler
  
• undocumented Z80 instructions and R register fully supported
  
• 3 color modes (INK, Black & White, Gray)
  
• 3 screen mapping modes (Pan, Shrink, ...

ZX Spectrum 48K, 128K, Plus2, Plus2A, Plus3 emulator derived from gp2xpectrum by Hermes/PS2Reality and continued by Metalbrain & Seleuco & SplinterGU.
xpectrum is ZX Spectrum emulator that could be easily port to various hand-held devices.The purpose of this project is to bring together the develop efforts to port to differents platforms.
Currently it includes support for S ...

vGBX is an open-source Java Applet that emulates the Nintendo Game Boy (GB) and Game Boy Color (GBC), released in 2010. vGBX is a fork of the excellent JavaBoy by Neil Millstone, which was in development from 2001 to 2005. Most of the differences between vGBX and JavaBoy are interface-related, code cleanup, and fixes for issues that popped up in newer versions of the JVM.

bee is an emulator of several video game systems. It currently emulates the "Sega 8-bit systems" Master System, ColecoVision, and SG-1000, as well as the Atari 2600/VCS. More systems will be added in the future.
bee is designed to be portable, accurate, and easy to use. At this time, the program is available for Windows, Mac OS X, and Linux x86.
bee emulates hardware mostly ...

New Snem was started a while ago, and has had _very_ slow progress. It's supposed to have cycle-accurate CPU and better PPU emulation, though it has mostly failed (so far). The PPU emulation is much better, supporting colour add/sub (with a couple of bugs in a few games), windowing, high res (ish). New SPC700 + DSP emulation has been added, an ...

E++ is a portable, OO emulator. It is designed to be flexible and easy to extend. The current version runs under DOS only. This version has Z80 and 6502 cores built in, and emulates the
following systems:

• Sinclair ZX Spectrum - With sound through your sound card,
  and Kempston Joystick support.


• Space Invaders - With sound. Also supports Lunar Rescu ...

ST-Sound was previously a ATARI Music emulator I've written some years ago. It's now a general "Nostalgic" Computer Sound Emulator ! ST-Sound includes many sound technics:

• Yamaha
  ...