Surge XT
Create synth patches and original sound effects with a flexible hybrid instrument available as a plugin or standalone app.
What’s included for free?
Full open-source synthesizer and downloadable builds; no subscription, render-credit allowance or paid preset requirement.
Provider information ↗Checked 2026-10-13
Before you use it
GPL-3.0 software. Official FAQ allows commercial use of sounds, songs and patches, including output made from factory presets.
Provider terms can change. Check current pricing and usage rights before starting a project.