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Gearboy vs SkyEmu: catalog facts
Gearboy	SkyEmu
Free Free and open source.	Free Free to download, with source code published on GitHub.
Windows, macOS, Linux	macOS, Linux
Built-in debugger Super Game Boy support	Covers Game Boy, Game Boy Color, GBA and DS in one program Low-level emulation aimed at preservation
Limited to Game Boy family systems	Platform support is not clearly documented in the research You must supply your own game files
Downloadable app	Downloadable app
Open source	Open 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 23, 2026	Official website Full listing and sources Checked September 23, 2026

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