From my research, I have learned that Project 64 is by far the best emulator you can find.
The best emulator is NO$GBA
emulator-zone.com visualboyadvance is the best.
The best PS2 emulator in terms of compatibility and relative speed is PCSX2.
yes but i dont have it
The best PS3 Emulator can be found on the Emulator Zone website. The download on the site is called rpcs3, it is for Windows and is a free download. It has a 3.5 star rating.
the best free emulator would be QEMU. But IEmulator V is a pay emulator that works amazingly.
Project64.
no
nogba
PCsx2 is the best emulator although it is still in beta stage and it is also free. see related link
PCSX2 is the only PS2 emulator to consider and they are working on Version 9.9
As of April, 2009, no PlayStation 3 emulator has been developed or released.