I remember Particle Illusion from years back and it was revolutionary then. Since coming into the BorisFX fold, it has matured and is quite simply, brilliant.
Today, for reasons unbeknownst to me, BorisFX has decided to release a stand alone version totally free of charge.
Whistle!Stamp! Cheer! Applause!
You can get it here, and below, if you have no idea what this fuss is all about is a video from BorisX giving you the heads up.