There are currently three major emulators for Nintendos classic 16-bit console, the Super Nintendo Entertainment System also known as SNES and these are: Snesx, ZSNES and BSNES/Higan. And the team behind Snesx has released a brand new version of it, bringing emulation accuracy and performance improvements.
Source: N4G PC One of the best SNES emulators, Snesx, got updated with accuracy and performance improvements