The Mac OS X build was released about 4 hours later.
OpenEmu is one of the best emulators on Mac OS. Edit: BizHawk 1.1.1b was released for Windows today. To play them, you must first install a BIOS for PlayStation. NES / Multi-System Emulator for Mac OS X. Games like Crash Bandicoot, Metal Gear Solid, Final Fantasy 7, Tekken 3, Gran Turismo and MediEvil are just some of the titles compatible with PCSX. However, you can not use CD images on PCSX so you'll have to burn them to disc first. Created by Linux, PCSX is an emulator for the first PlayStation games that allows you to use CDs from the legendary Sony console on your Mac OS X.