Floorfish is a free gate VST, Audio Unit plugin developed by digitalfishphones. Compatible OS(s): Windows 64b, macOS.
Floorfish is a simple expander / gate device, easy to set up and offers a broad variety of processing, ranging from slight expansion, background noise attenuation to extreme gating effects.
What’s different from similar units is the ability to scan the source and adjust the transition curve accordingly.
http://www.digitalfishphones.com/