Surge XT

6.9easy start · #11 of 34
in Software Synthesizers

Free to practise onyes
Free trialnot on record
Well documentedyes
Runs where you workyes

Runs on Linux, Mac, Windows.

Surge XT is ranked #11 of 34 in software synthesizers on The Geeks Club. It runs on Linux, macOS, Windows. There is a free plan.

Surge XT plans and pricing

All plans

Surge XT Free Free and open source software under GPL3 Virtual instrument plugin · Stable release 1.3.4 · Windows, macOS, Linux surge-synthesizer.github.io · 30 Sept 2026

Compared on software synthesizers

Free plan: Yes
Plugin formats: vst3, au, clap
Standalone app: Yes
MPE support: Yes

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The record

What it does: Surge XT is a virtual instrument plugin and hybrid synthesizer for making music.
Synthesis: Its subtractive hybrid synthesis engine provides two scenes per patch that can be layered or split.
Sound library: The product page lists over 2,800 patches and over 700 wavetables.
Oscillators: Each scene has three oscillators with 12 oscillator algorithms, including wavetable, FM, string, and audio input.
Modulation and effects: The feature list includes 12 LFO units, flexible modulation routing, 16 effect units, and 27 effect algorithms.
Performance features: The site lists MPE, Scala and MTS-ESP microtuning, and Open Sound Control support.
Host requirement: Surge XT is primarily an instrument plugin and requires a DAW or another compatible host to run as a plugin; a standalone executable is also available.
Notable format limits: The FAQ says the project does not distribute AAX builds and explains that its distributed builds moved to VST3 and AU starting with Surge 1.7.0.
License and music use: Surge XT is free and open source under GPL3, and the FAQ says users may distribute or commercially license music and other output made with it.
Security and compliance: The official pages reviewed describe GPL3 licensing but make no security certification or compliance claim.
Support: The FAQ directs users who need help to the Surge Synth Team Discord help channel.
Intended users: The site presents Surge XT for sound designers and music makers, and welcomes volunteer developers, designers, testers, and content creators.
Stable release: The downloads page identifies Surge XT 1.3.4 as the stable version recommended for music making in a normal production environment.
Founded: 2005
Price from: Free

Where it ranks on The Geeks Club

Best Software Synthesizers in 2026#11 of 34
Best Virtual Instruments in 2026#7 of 25

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Sources

surge-synthesizer.github.io/about/· checked 30 Sept 2026
surge-synthesizer.github.io· checked 30 Sept 2026
surge-synthesizer.github.io/faq/· checked 30 Sept 2026
surge-synthesizer.github.io/downloads/· checked 30 Sept 2026