Florian Mrugalla ADSR WiN Mac [FREE]

FREE | Win Mac VST3 | 5 MB
A plugin that transforms MIDI input into an ADSR modulator audio output.
Available for windows and macOS
VST3 format

Mac install info:

https://www.osirisguitar.com/2020/04/01/how-to-make-unsigned-vsts-work-in-macos-catalina/