Mesen (multi-emu) is now a community-driven project under the name MesenCE
"Sour" the original dev is also still actively involved. Mesen is a multi-system emulator for Windows, Linux, and macOS. It supports NES, SNES, Game Boy (GB/SGB/GBC), Game Boy Advance, PC Engine, SMS/Game Gear, and WonderSwan (WS/WSC).
MesenCE is a community-managed fork based on Mesen2, created to maintain and expand this emulator into the future.
https://github.com/nesdev-org/MesenCEOpen linkView original on sh.itjust.works