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BGB vs Gearboy: catalog facts
BGB	Gearboy
Free Free to download.	Free Free and open source.
Windows	Windows, macOS, Linux
High emulation accuracy based on test ROM research Built-in debugger for ROM development	Built-in debugger Super Game Boy support
Windows only, with other systems relying on Wine Closed source	Limited to Game Boy family systems
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 23, 2026

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