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M64Py vs Rosalie's Mupen GUI: catalog facts
M64Py	Rosalie's Mupen GUI
Free Free and open source under the GPL-3.0.	Free Free and open source.
Windows, macOS, Linux	Windows, Linux
Graphical setup for Mupen64Plus plugins and input ROM list with preview images and cheat support	Simple interface over the Mupen64Plus core Netplay support
Depends on the Mupen64Plus library for emulation No games included	No macOS build mentioned Netplay needs port forwarding or a server
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 October 1, 2026	Official website Full listing and sources Checked September 23, 2026

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