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snes9x-rr: Preferred for Jets of Time due to its EmoTracker Lua integration. For the tracker to work, you need to be using snes9x-rr, which is linked here. Make sure to use the 32-bit version of the emulator. The drawback is that this build is currently Windows-only.
snes9x: This release of snes9x doesn't support EmoTracker, but it will run on platforms other than Windows (which is the version at the linked site).
MacOS: on github
Linux builds are available on a google site linked from the main snes9x site, as well as on Flathub, or can be built from source.