NW Sidechain is a free VST3 sidechain effect plugin that gives you precise control over your sidechain volume shaping without having to use on compressors or manually drawn automations.
Create smooth, clean volume curves on any track in just a few clicks. Whether you want a consistent pump on every beat, every other beat, once per bar, or triggered by an external audio source, NW Sidechain makes it quick and easy.
There is no full version, Sidechain ships free, forever.
I'm using FL Studio 26 so these instructions follow FL's setup, but the process is likely very similar in most DAWs.
That's it. Once it's set up, the incoming sidechain signal controls the volume shaping automatically.