InstrumentSynth · Filter bank
Bagels V2
Dropshot AudioAuto
Filter-bank synthResonant filter-bank synthesizer
Free
VST3AU+2Runs on Win · Mac · Linux
Free AU synth plugins
10 free AU synth plugins. Added since September 2026, newest first. Formats, OS, price and copy protection for each one.
Plugins
InstrumentSynth · FM
FSVR
Musica StudioIndie
FS1R recreationOpen-source recreation of the Yamaha FS1R
Free
VST3AU+3Runs on Win · Mac · Linux
InstrumentSynth · Hybrid
SQ8L
SQ8L RevivalAuto
SQ-80 emulation64-bit port of the Ensoniq SQ-80 emulation
Free
VSTVST3+3Runs on Win · Mac · Linux
InstrumentSynth · Creative lab
Prisma
UVIAuto
Synths, strings, drumsSynths, strings and drums in one lab
Free
VST3AU+1Runs on Win · Mac
InstrumentSynth · Analog VA
Robbie
MEY Audio EngineeringIndieAuto
16-voice analog synth16-voice virtual analog synth you play
Free
VST3AU+1Runs on Win · Mac
InstrumentSynth · Granular
GRNi Lite
FRCTL AudioAuto
Granular samplerGranular sampler: load a sample, play grains
Free
VST3CLAP+1Runs on Win · Mac · Linux
InstrumentSynth · Drone
KS Ghostform
Kreativ SoundIndieAuto
Drone and string synthEvolving drone and string synth, 144 presets
Free
VST3AURuns on Win · Mac
InstrumentSynth · Wavetable
Wave Emulation
Dave WhitingAuto
Waldorf Wave modelOpen-source Waldorf Wave recreation
Free
VST3AU+2Runs on Win · Mac
InstrumentSynth · Granular
Jerrican
Alban BaillyAuto
Self-composing grainsGranular instrument that composes itself
Free
VST3AU+1Runs on Win · Mac
InstrumentSynth · Polyphonic
Pigments Play
ArturiaAuto
Free Pigments editionFree play edition of the Pigments synth
Free
VST3AU+3Runs on Win · Mac