pSX - A freeware emulator for Linux/i386 and Windows. - http://psxemulator.gazaxian.com/
FPSEce - Free Playstation Emulator for your Pocket PC - http://www.fpsece.net
AdriPSX - An open source playstation emulator for Windows. - http://adripsx.psxemu.com/
PCSX2 - Offers emulator for Playstation 2, for Windows and Linux, their plugins, and related downloads. - http://pcsx2.net/
PS2 Emulators - Allows you to download PS2 emulators and provides VGS, PCX Playstation emulators and a more work-in progress ps2 emulators. - http://pstools.bizhat.com
Console Gaming World - Bleem! - Includes information on the shareware PSX emulator Bleem! and downloads of its updates and patches. - http://www.megagames.com/psx/psx_bleem!.shtml
NeoPSX - An open source emulator in development for Windows. - http://sourceforge.net/projects/neo-psx/
PSXeven - A freeware emulator for Windows. - http://batard.psxfanatics.com/
Sope - An open source emulator for Linux/Unix systems. - http://sope.sourceforge.net/
PCSX - An open source emulator for Dreamcast, Linux, and Windows. - http://www.pcsx.net/
ePSXe - Freeware emulator for Linux/i386 and Windows. - http://www.epsxe.com/