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jgenesis vs ZSNES: catalog facts
jgenesis	ZSNES
Free Free to download from GitHub.	Free Free and open source under the GPL-2.0 licence.
Windows, Linux, Web	Linux
Several Sega consoles plus the SNES in one emulator Runs in a browser through WebAssembly	Classic ZSNES interface kept working on modern systems Available as a Flatpak
macOS is not officially supported Smaller project than the established multi-system emulators	Less accurate emulation than newer SNES emulators A community fork rather than the original project
Downloadable app, Web application	Downloadable app
Closed source	Open source
License not stated	License: GPL-2.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.