Best ZynAddSubFX Alternatives & Competitors in 2025

Open-source subtractive-hybrid synthesizer formerly sold commercially as Vember Audio Surge.

Open Source

Vital is a spectral warping wavetable synthesizer with drag'n'drop modulation workflow and animated preview of the synth's inner workings where needed. Comes with many modulation sources (including audio-rate), MPE support and FX chain.

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VST for FL Studio, Ableton Live, and many other VST supported DAWs. Heavily utilized in EDM.

Dexed is a multi-platform, multi-format plugin synth that is closely modeled on the Yamaha DX7.

FluidSynth is a real-time software synthesizer based on the SoundFont 2 specifications and has...

Open Source

Piano, pad and synth VST for DAW's.

u-he makes creative software synthesizers and effects.

Qsynth is a simple Qt4 application wrapper for the ...

Synth1 is a software synthesizer. Functionally it is modeled on the Clavia Nord Lead 2 Red Synth.

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WhySynth is a versatile softsynth which operates as a plugin for the

Nexus 2 is a synthesizing tool that comes with easy navigation columns, categories, presets, color tags, bookmarks, and other features, which makes it an easy-to-use but powerful software.

Powerful, universal wavetable synth with an intuitive workflow.