Free spectral warping wavetable synth, the best-known free Serum alternative.
VST3supportedAUsupportedAAXnot supportedCLAPsupportedWINsupportedMACsupportedLNXsupported
Checked September 2026 · 18 picks · 18 compared
Best Free Synth Plugins for Windows (2026)
The best free synth plugins for Windows are Vital, Surge XT and Spitfire LABS. Vital is best for producers who want Serum-style sound design for free. Surge XT is best for budget-conscious producers wanting a fully free, open-source synth with pro-level features. Spitfire LABS is best for producers wanting free, high-quality Spitfire-recorded instruments (legacy plugin, being discontinued Oct 31 2026).
Free, open-source hybrid synthesizer with extensive filters and a flexible modulation engine.
VST3supportedAUsupportedAAXnot supportedCLAPsupportedWINsupportedMACsupportedLNXsupportedFree Spitfire instrument plugin/library set, being sunset in favor of subscription-based Splice INSTRUMENT.
VST3supportedAUsupportedAAXsupportedCLAPnot supportedWINsupportedMACsupportedLNXnot supported- FREE
#4Digital Suburban
Dexed
Free, open-source FM synthesizer plugin modeled closely on the Yamaha DX7.
VST3not supportedAUsupportedAAXnot supportedCLAPnot supportedWINsupportedMACsupportedLNXsupported Keyboard anthology with 2,000+ curated presets from Arturia's V Collection synths and keys.
VST3supportedAUsupportedAAXsupportedCLAPnot supportedWINsupportedMACsupportedLNXnot supported- FREE
#6Ryan Challinor
Bespoke Synth
A modular synth environment where separate modules are patched together.
VST3not supportedAUnot supportedAAXnot supportedCLAPnot supportedWINsupportedMACsupportedLNXsupported A free, open-source modular synthesizer plugin based on VCV Rack.
VST3supportedAUsupportedAAXnot supportedCLAPsupportedWINsupportedMACsupportedLNXsupportedFree recreation of the 1980s Radio Shack MG-1 synthesizer.
VST3supportedAUsupportedAAXsupportedCLAPnot supportedWINsupportedMACsupportedLNXnot supported- FREE
#9Matt Tytel
Helm
Free, open-source subtractive synth with polyphonic modulation; Matt Tytel's predecessor to Vital.
VST3not supportedAUsupportedAAXnot supportedCLAPnot supportedWINsupportedMACsupportedLNXsupported Free production bundle with Kontakt Player, Massive X Player, effects, and sound libraries.
VST3supportedAUsupportedAAXsupportedCLAPnot supportedWINsupportedMACsupportedLNXnot supported- FREE
#11TheWaveWarden
Odin 2
Free open-source 24-voice polyphonic synth with custom waveform drawing and analog filter models.
VST3supportedAUsupportedAAXnot supportedCLAPsupportedWINsupportedMACsupportedLNXsupported Six-engine hybrid software synthesizer with modal, granular, wavetable, sample, harmonic and virtual analog synthesis.
VST3supportedAUsupportedAAXsupportedCLAPnot supportedWINsupportedMACsupportedLNXnot supported- FREE
#13Ichiro Toda (Daichi Laboratory)
Synth1
Free virtual analog softsynth modeled on the Clavia Nord Lead 2, widely used since the 2000s.
VST3not supportedAUsupportedAAXnot supportedCLAPnot supportedWINsupportedMACsupportedLNXnot supported Free virtual analog synthesizer with a great sound and low CPU usage.
VST3supportedAUsupportedAAXsupportedCLAPsupportedWINsupportedMACsupportedLNXsupportedA compact virtual analog synth that delivers professional sound at a minimal file size.
VST3not supportedAUsupportedAAXnot supportedCLAPnot supportedWINsupportedMACsupportedLNXsupported- FREE
#16u-he
TyrellN6
Free virtual analog synthesizer with classic dual-oscillator architecture and a Diva-derived filter.
VST3supportedAUsupportedAAXsupportedCLAPsupportedWINsupportedMACsupportedLNXsupported - FREE
#17u-he
u-he Podolski
A lightweight, CPU-efficient virtual analog synth with one oscillator, multimode filter and built-in sequencer.
VST3supportedAUsupportedAAXsupportedCLAPnot supportedWINsupportedMACsupportedLNXsupported - FREE
#18u-he
u-he Zebralette
A free introductory synth featuring the Zebra2 spectral oscillator.
VST3supportedAUsupportedAAXsupportedCLAPsupportedWINsupportedMACsupportedLNXsupported
Comparison table
| Name | Price | Formats | Runs on |
|---|---|---|---|
| VitalMatt Tytel | Free | VST3, AU, CLAP, LV2, Standalone | Windows, macOS, Linux |
| Surge XTSurge Synth Team | Free | VST3, AU, CLAP, LV2, Standalone | Windows, macOS, Linux |
| Spitfire LABSSpitfire Audio | Free | VST, VST3, AU, AAX | Windows, macOS |
| DexedDigital Suburban | Free | VST, AU, LV2, Standalone | Windows, macOS, Linux |
| Analog Lab ProArturia | Free | Standalone, VST3, AU, AAX | Windows, macOS |
| Bespoke SynthRyan Challinor | Free | VST | Windows, macOS, Linux |
| CardinalDISTRHO | Free | AU, CLAP, LV2, VST2, VST3 | Windows, macOS, Linux |
| Cherry Audio Surrealistic MG-1 PlusCherry Audio | Free | VST, VST3, AU, AAX | Windows, macOS |
| HelmMatt Tytel | Free | Standalone, VST, AU, LV2 | Windows, macOS, Linux |
| Komplete StartNative Instruments | Free | Standalone, VST3, AU, AAX | Windows, macOS |
| Odin 2TheWaveWarden | Free | Standalone, VST3, AU, LV2, CLAP | Windows, macOS, Linux |
| PigmentsArturia | Free | Standalone, VST3, AU, AAX | Windows, macOS |
| Synth1Ichiro Toda (Daichi Laboratory) | Free | VST, AU | Windows, macOS |
| TAL-NoiseMakerTAL Software GmbH | Free | Standalone, VST, VST3, AU, AAX, CLAP | Windows, macOS, Linux |
| TunefishBrain Control | Free | VST, AU | Windows, macOS, Linux |
| TyrellN6u-he | Free | VST3, AU, AAX, CLAP | Windows, macOS, Linux |
| u-he Podolskiu-he | Free | VST3, AU, AAX | Windows, macOS, Linux |
| u-he Zebraletteu-he | Free | CLAP, VST3, AU, AAX | Windows, macOS, Linux |
Questions people ask
Vital by Matt Tytel. It is best for producers who want Serum-style sound design for free and is free to use.
Vital, Surge XT, Dexed, Bespoke Synth, Cardinal, Helm, Odin 2, TAL-NoiseMaker, Tunefish, TyrellN6, u-he Podolski, u-he Zebralette.