Play! PS2 Emulator is described as 'Play! is a portable PlayStation2 emulator. The focus of the project is on making PlayStation2 emulation easy and accessible. Just pop in your favorite game's disc and have fun! No BIOS required. Play! is an high-level emulator' and is an app in the Gaming Software category. There are six alternatives to Play! PS2 Emulator for Windows, Linux and Mac. The best alternative is PCSX2, which is both free and Open Source. Other great apps like Play! PS2 Emulator are OpenEmu (Free, Open Source), RPCS3 (Free, Open Source), DobieStation (Free, Open Source) and HPS2x64 (Free, Open Source).
Open Emu is an open source project to bring game emulation to OS X as a first class citizen, leveraging modern OS X technologies such as Cocoa, Core Animation and Quartz, and 3rd party libraries like Sparkle for auto-updating.