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OpenMPT vs Furnace: catalog facts
OpenMPT	Furnace
Free Completely free software.	Free Free and open source under the GPL.
Windows	Windows, macOS, Linux
Edits IT, XM, S3M and MOD files natively VST plugin and ASIO output support	Supports many classic sound chips in one tracker Compatible with DefleMask modules
Windows only for the editor Tracker workflow takes time to learn	Tracker interface has a learning curve for newcomers
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL
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 24, 2026

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