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Mednafen vs Geargrafx: catalog facts
Mednafen	Geargrafx
Free Free and open source under the GPL.	Free Free and open source.
Windows, macOS, Linux, Command line	Windows, macOS, Linux
One accurate emulator covering a long list of systems Saturn and PC Engine emulation are among the most accurate available	Covers HuCard, SuperGrafx and CD-ROM² software Built-in debugger for development work
Command-line driven with no real graphical interface Configuration is a text file with many options	Covers only the PC Engine family Smaller project than multi-system emulators
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0	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.