The Ugly VSTi Interface

The Ugly VSTi Interface is a free adapter and host plugin developed by reFuse Software. Compatible OS(s): macOS.

Ugly VSTi Interface is a simple host application for VSTi plug-ins. It loads one VSTi at a time, and no effects, but it’s intuitive and stable.


  • The Ugly can now be launched by double-clicking a VST file.
  • Now remembers your MIDI input device of choice.
  • Added “hold” button for onscreen keyboard.
  • Now passes aftertouch MIDI data.
  • Added Panic button (kill all hanging MIDI notes).
  • Lots more little improvements.
  • Awesome new ugly colors.

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