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Schism Tracker vs Furnace: catalog facts
Schism Tracker	Furnace
Free Free and open source under the GPL-2.0.	Free Free and open source under the GPL.
Windows, macOS, Linux	Windows, macOS, Linux
Faithful Impulse Tracker workflow and feel Improved IT playback over the original engine	Supports many classic sound chips in one tracker Compatible with DefleMask modules
Old-school tracker interface has a steep learning curve Not a full DAW; focused on sample-based module music	Tracker interface has a learning curve for newcomers
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0	License: GPL
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 24, 2026

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