NeoPOP-GP2X is an emulator for the NeoGeo Pocket. This emulator works at about 20 FPS, so the speed is not good enough.
NES2x is an NES Emulator.
O2EM_GP2X is an Odyssey 2 and Videopac+ emulator. Features iclude a full implementation of a virtual keyboard making most games fully playable.
Osmose is an SMS emulator.
Outcast is an emulator of the Atari ST. Features include: load/save states, chip music, frameskip, throttle menu, virtual keyboard and more.
Phamicom-GP2X is an emulator for the NES (Nintendo Entertainment System) AKA Famicom. It features savestates, and uses minilib instead of SDL.
PocketSNES is a mixture of SquidgeSNES and the PocketSNES Renderer. Supports transparencies and runs most games fullspeed at 250 MHz!
Potator2x is an unofficial continuation/rewrite of Potator, a Watara Supervision Emulator.
Psx4gp2x is a high quality Playstation 1 emulator.
RACE! (Rather A Cardfighter Emulator) for the GP32, GP2X, Gizmondo, DreamCast, and PC. This is a Neo Geo Pocket (NGP) and Neo Geo Pocket Color (NGPC) emulator.
SMSPlus2X is a Master System/Game Gear emulator created by efegea (Francisco Gonzalez).
SquidgeNgine is a PCEngine port with lots of optimizations.
Stella is a multi-platform Atari 2600 VCS emulator. It allows you to play all of your favorite Atari 2600 games again! Stella was originally developed for Linux by Bradford W. Mott, however, it has been ported to a number of other platforms.
uae2x is an amiga emulator ported and coded by GnoStic containing code from: uae 0.8.22--0.8.25, pspuae 054-WIP3, e-uae-0.8.29-WIP3, uae4all 0.5.1, cpuspeed and the mmuhack module.
VICE is a program that runs on a Unix, MS-DOS, Win32, OS/2, Acorn RISC OS, GP2X or BeOS machine and executes programs intended for the old 8-bit computers. The current version emulates the C64, the C128, the VIC20, all the PET models (except the SuperPET 9000, which is out of line anyway), the PLUS4 and the CBM-II (aka C610). Read more
VICE2X is a port of VICE for the GP2X. VICE2X includes emulators for the following Commodore machines: C64, C128, Plus4, Vic20, PET, and the CBM-II.
Virtual Jaguar X2
Virtual Jaguar X2 is a port of Virtual Jaguar, an Atari Jaguar emulator. This is the first release of the port and as such it's lacking quite a lot it runs at about 4 fps for a start.