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Rosalie's Mupen GUI vs RetroArch: catalog facts
Rosalie's Mupen GUI	RetroArch
Free Free and open source.	Free Free and open source, funded by donations.
Windows, Linux	Windows, macOS, Linux, Android, iOS
Simple interface over the Mupen64Plus core Netplay support	Configure once and every emulator core inherits the settings Runs on desktops, phones and a long list of games consoles
No macOS build mentioned Netplay needs port forwarding or a server	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
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: GPL-3.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 20, 2026

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