Emulators

ColEm PSP – Reaching way back into video game history, you can now enjoy your favorite ColecoVision games with this emulator.

Daedalus PSP – A Nintendo 64 emulator that even allows you to save your progress at any point in the game.

DGen – An emulator for the Sega Genesis.  Page is in Japanese, but the download is marked and it has an English read me file.

NeoCDPSP – A popular emulator for the old Neo Geo gaming system.

NesterJ – An emulator for the original Nintendo Entertainment System (NES) games.  Please note that the page is in Japanese and this is a translated page, but the download is clearly marked.

Snes9xTYL – Super Nintendo Entertainment System game emulators for the PSP.