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RetroArch vs jgenesis: catalog facts
RetroArch	jgenesis
Free Free and open source, funded by donations.	Free Free to download from GitHub.
Windows, macOS, Linux, Android, iOS	Windows, Linux, Web
Configure once and every emulator core inherits the settings Runs on desktops, phones and a long list of games consoles	Several Sega consoles plus the SNES in one emulator Runs in a browser through WebAssembly
The settings menu is deep and intimidating the first time You still have to download cores, and some systems need BIOS files you must supply	macOS is not officially supported Smaller project than the established multi-system emulators
Downloadable app	Downloadable app, Web application
Open source	Closed source
License: GPL-3.0	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 20, 2026	Official website Full listing and sources Checked October 1, 2026

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