Tunefish 4
Free additive synth by Brain Control · since 2014 · version 4.2.0

What Tunefish 4 is
Born in the demoscene to fit inside a 64k intro. An additive wavetable engine that punches far above its size.
- Additive synthesis based wavetable generator
- Noise generator with any frequency and bandwidth
- Effects stack of up to 10 effects, any order
How to install Tunefish 4
Tunefish 4 runs on Windows, macOS and Linux. It ships as VST2, VST3 and AU. Logic Pro and GarageBand users need the AU build. Download it from tunefish-synth.com, run the installer or copy the plugin into your plugin folder, then rescan plugins in your DAW.
Questions
Is Tunefish 4 free?
Yes. Tunefish 4 is free from Brain Control, and it is open source under the GPL-3.0 license. There is no trial period and no feature lock.
What plugin formats does Tunefish 4 support?
Tunefish 4 is available as VST2, VST3 and AU.
Which operating systems run Tunefish 4?
Tunefish 4 runs on Windows, macOS and Linux.
Free alternatives to Tunefish 4

Three engines, 128-harmonic waveform generator, 1,100 instruments. A veteran of Linux studios since the 2000s.

The Linux-only ZynAddSubFX fork with deep MIDI learn and background PADsynth recalculation.

The wavetable synth that made Serum optional. Spectral warping, drag-and-drop modulation, all of it free.