Flutterbird is a free pitch shifter VST plugin developed by tesselode. Compatible OS(s): Windows.
Flutterbird is a free, open-source effect plugin for adding pitch and volume fluctuation to incoming audio. It can be used for traditional wow/flutter effects as well as more chaotic, extreme modulation.
Flutterbird has four separate oscillators with adjustable speeds that can be mapped to either pitch or volume.
https://tesselode.itch.io/