Contents of this folder:
6 PS1 emulators, 1 PocketStation emulator, 1 Plugin
Xebra
ePSXe
DuckStation
PCSX Reloaded
PCSX Redux
PCSX PGXP
PK201 (for emulating the PocketStation through the Xebra emulator)
Nuvee Lightgun plugin

Emulation isn't perfect. If a game doesn't work with one emulator, try another. There are a total of 6 different emulators here (some of them are just forks of other ones)

Nuvee lightgun plugin will allow your mouse to act like a lightgun

Websites for the various emulators:
https://www.epsxe.com/
https://github.com/stenzek/duckstation
http://drhell.web.fc2.com/ps1/
https://github.com/iCatButler/pcsxr
https://github.com/grumpycoders/pcsx-redux
https://www.ngemu.com/threads/pcsxr-pgxp.186369/