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SkyEmu vs BGB: catalog facts
SkyEmu	BGB
Free Free to download, with source code published on GitHub.	Free Free to download.
macOS, Linux	Windows
Covers Game Boy, Game Boy Color, GBA and DS in one program Low-level emulation aimed at preservation	High emulation accuracy based on test ROM research Built-in debugger for ROM development
Platform support is not clearly documented in the research You must supply your own game files	Windows only, with other systems relying on Wine Closed source
Downloadable app	Downloadable app
Open source	Closed source
License not stated	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 24, 2026

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