Re: Free Audio Unit Plugins...
Here are a few more..
Blue Cat has a free bundle which includes a few delay-based FX, an amp sim, and some metering/utility tools..
HOFA also has a free bundle, which also includes some interesting metering/utility plug-ins..
And Goodhertz offers a free MS (Mid/Side) plug-in, for DAWs/plug-ins that don't have that capability built-in..
I can confirm that the Blue Cat and Goodhertz plug-ins are compatible with Mojave.