

(There's another exe in there used for backwards compatibility with some old stuff, you probably don't want to use that other one.) If you're on Windows, get the Win64 package there and unzip it into your Quake folder, then run "quakespasm.exe". it's rock solid and almost all new map releases are tested against it.

FWIW personally I tend to use Quakespasm. There's a bunch of good comments already posted here.
