Free Polyphonic Software Synthesizer, ModulAir, Now Available

Full Bucket Music has released ModulAir 1.0 – a free polyphonic modular synthesizer for Mac & Windows.

ModulAir, previously available as a public beta, is a modular polyphonic software synthesizer for Microsoft Windows (VST) and Apple macOS (VST/AU), written in native C++ code for high performance and low CPU consumption.

The developer notes, “ModulAir is a work in progress and as of now with only a bunch of quirky presets and a lousy documentation. I am constantly adding modules and stuff to it. :-)”


  • Fully modular architecture
  • Up to 18 modules per patch
  • 43 module types available
  • Polyphonic Voice and monophonic Master modules
  • Up to 64 voices polyphony
  • External signal processing possible
  • TUN/SCL micro-tuning file import
  • MIDI Learn – all parameters can be controlled by MIDI CC
  • Double precision audio processing
  • Plug-in supports Windows and macOS (32 bit and 64 bit)
  • ModulAir is a free download in VST and AU plugin formats.

Pricing and Availability

ModulAir is available now as a free download for Mac & Windows. Donations are encouraged to help support future development.

3 thoughts on “Free Polyphonic Software Synthesizer, ModulAir, Now Available

  1. I’ve been using this for a while. It’s got a very good microtonal implementation, allowing import of TUN files and full keyboard microtuning. It’s efficient and low latency. On the Mac it runs in everything from OS 10.6.8 to the latest. And it sounds very good.

    I commend the creator on both his superb engineering and his good taste.

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