Emulators:
These are the best emulators for 2021, but the emulator really depends on what you want, what system you run it on, what systems you want to emulate, ect.
Top Emulator: Retroarch
Retroarch is the go-to emulator because it can be installed on a potato if you try hard enough, and emulates almost any system, with downloadable cores for free (In case you run out)
I wanna Emulate Playstation
Yes, these emulators are top-of-the-line, quality emulators for your all of your playstation needs. There is no argument that the Sony Playstation line is that of the absolute best gaming system, (and specifically the Playstation 2)
I wanna Emulate XBOX
*We need some xbox emulators to put here