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Furnace vs FamiStudio: catalog facts
Furnace	FamiStudio
Free Free and open source under the GPL.	Free Free and open source under the MIT licence.
Windows, macOS, Linux	Windows, macOS, Linux, Android, iOS
Supports many classic sound chips in one tracker Compatible with DefleMask modules	Piano roll editing instead of a traditional tracker Exports NSF and ROM files and ships a sound engine for homebrew games
Tracker interface has a learning curve for newcomers	Limited to NES and Famicom sound hardware Original author has stepped back from day-to-day development
Downloadable app	Downloadable app
Open source	Open source
License: GPL	License: MIT
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 October 1, 2026

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