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OpenEmu vs Mednaffe: catalog facts
OpenEmu	Mednaffe
Free The open-source application is available without a license fee.	Free Free and open source under the GPL-3.0.
macOS	Windows, Linux
Native Mac library interface with artwork and metadata handled for you One controller configuration applies across every emulated system	Graphical settings for a command-line emulator Lightweight, depending only on GTK 3
macOS only Core updates depend on the OpenEmu team packaging them	Front end only; emulation depends on Mednafen No macOS build
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-3.0
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked October 1, 2026

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