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

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