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Odin 2 vs Surge XT: catalog facts
Odin 2	Surge XT
Free Free to download and open source under GPL-3.0-or-later.	Free Free and open source.
Windows, macOS, Linux	Windows, macOS, Linux
Available as a standalone app and plugin Includes modeled filters, effects, and modulation	Many synthesis methods, filters and effects MPE and microtuning support
Available plugin formats vary by platform.	Large feature set takes time to learn
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked September 23, 2026

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