While many users look for a "free download" of WaveShell, it is not a standalone free plugin. It is an infrastructure file that comes bundled with the software installer. You can legally obtain the necessary files through official legacy channels:
on macOS Catalina (10.15) or newer, as those operating systems require 64-bit software that aligns with later Waves versions. wakelet.com waveshell vst 9.2 free download