bsnes is a Super Nintendo / Super Famicom emulator that began development on October 14th, 2004. It is a subset project of higan, and focuses on performance, features, and ease of use.
bsnes can optionally be configured to have equal accuracy to higan's SNES emulation, but these accuracy options do come at a run-time performance cost.
Some of the unique features to bsnes include:
100% (known) bug-free compatibility with the entire officially licensed SNES library
true Super Game Boy emulation (utilizing SameBoy)
HD mode 7 graphics (vastly increased anti-aliasing for affine texture effects)
a multi-threaded video graphics renderer
built-in databases for games, PCBs, and cheat codes
save state manager with screenshot previews and label support

This release brings in a 25% speed increase, optional frameskipping during fast forward (allowing an additional 33% max frame rate)

official HD mode 7 support, SameBoy integration for 60% faster and more accurate Super Game Boy emulation

software filter support (snes_ntsc, HQ2x, Eagle, scanlines, etc)

the return of mightymo's integrated cheat code database, cheat search support, movie recording and playback support, rewind support, cubic audio interpolation, 7-zip decompression support, ExLoROM board mapping support, adaptive sync support for OpenGL, and greatly improved macOS support.

And if that's not enough, there's also true pixel-perfect ZSNES snow effect emulation ... seriously!

bsnes now also has an official GitHub repository with nightly builds to enable more rapid and collaborative development.