beatassist.eu
Kuma 508
Kuma 508 by beatassist.eu is a hybrid FM and analog synthesizer featuring 5 FM algorithms, 3 single oscillator modes, semi-modular patchable filters, and 22 extra waveforms per oscillator.
VST2Synths
Instruments, effects, and hidden gems
Free plugins: Synths
Browse 587 reviewed free synths plugins for Windows, with compatibility, formats, interface previews, and installation details.
2140reviewed plugins
79%install-ready
Top 5category ranks
40sound categories
All categoriesDrum kits · 29Drum synths · 14Drum machines · 9Single drums · 27Groove / sequencers · 10Percussion · 30Drums · 30Guitar & bass · 28Piano & keys · 79Brass & wind · 44Folk & ethnic · 53Orchestral · 24Samplers · 52Loop & scratch · 12Synths · 587Organs · 30
Filtered catalog
587 plugins
Every reviewed plugin matching the current filters.
Xenobioz
Kruudster
Kruudster by Xenobioz is a hybrid synthesizer featuring drawable low-resolution waveforms, three oscillators, three LFOs, a randomizer, multiple ADSRs, and a versatile filter with 13 modes.
VST2Synths
Xenobioz
Kruud
Kruud by Xenobioz is a Windows-only VST2 synthesizer featuring a drawable low resolution oscillator with multiple waveform modes including Phase Mod, PWM, and morph modes.
VST2Synths
Futucraft
Kairatune
Kairatune by Futucraft is a synthesizer plugin tailored for electronic music producers seeking crisp and tight electric sounds with high audio quality.
VST2Synths
KBplugs
Joker
Joker by KBplugs is a VST2 synthesizer plugin for Windows x86 systems inspired by the u-he ACE synthesizer circuits but without aiming to replicate the original sound. It comes without presets.
VST2Synths
Callybeat
Hum808 X
Hum808 X is a free bass synthesizer plugin for Windows offering 3 oscillators, a sampler, and flexible subtractive or FM synthesis modes to create crunchy or deep bass sounds.
VST2Synths
Callybeat
Hum808
Hum808 by Callybeat is a free VST2 synth plugin for Windows designed to create crunchy and deep bass sounds with 4 oscillators, 2 filters, and digital distortion.
VST2Synths
Quilcom
Harvester
Harvester by Quilcom is a polyphonic granular synthesizer for Windows that transforms WAV sound clips into new tones playable via MIDI.
VST2Synths
ndc Plugs
Harmonical
Harmonical is an additive synthesizer that uses spherical harmonics to modulate sphere vertices, generating unique waveforms with an OpenGL visual display for each voice.
VST2Synths
GTG
GTG Sputnik 2000
GTG Sputnik 2000 is a retro-style synthesizer featuring three phase modulation oscillators, one analog oscillator, and effects like LFO, chorus, and reverb. It offers 97 presets including bass, percussion, pads, and FX.
VST2Synths
Xenobioz
Funxion
Funxion by Xenobioz is a hybrid synthesizer offering user-definable waveforms and distortion, featuring 3 oscillators with VA and custom waveshapes, FM, sync, and morph modes.
VST2Synths
Jeroen Breebaart
FSynth Pro
FSynth Pro by Jeroen Breebaart is a VST2 audio effect that resynthesizes audio by modifying envelope and filter characteristics based on detected audio events.
VST2Synths
Spacedad
Frankenstein2
Frankenstein2 by Spacedad is an experimental synth for Windows featuring multiple synthesis techniques combined into one unique VST2 plugin.
VST2Synths
RDGAudio
EZ Plucker
EZ Plucker is a 32-voice subtractive synthesizer designed for trance chord plucks, arpeggios, basses, pads, and leads with 36 oscillator types and separate unison and filter envelopes.
VST2Synths
Fabric 70
Explorer
Explorer by Fabric 70 is a polyphonic synthesizer featuring waveshaping and oscillator modulation with extensive modulation sources.
VST2Synths
HrastProgrammer
DumBass
DumBass is a free Windows VST synthesizer featuring a SuperSaw engine that delivers complex sounds with a streamlined feature set.
VST2Synths
Xenobioz
Dulcet
Dulcet by Xenobioz is a physical modeling synthesizer featuring a versatile body resonator, multiple noise modes, and an oscillator with saw, sine, and square waves.
VST2Synths
beatassist.eu
Drag
Drag is a polyphonic synthesizer with 4 oscillators tailored for GOA/PSY leads, featuring 4 delays, 4 LFOs, master chorus, reverb, and octave stepper.
VST2Synths
The free-plugin pulseUpdated Aug 23, 2026
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