I seen a 3rd party plugin by Tyson Ibele for 3ds Max 2017-2020 named tyFlow that amazed me, and I know that the Max community had been anxiously awaiting a beta to try it. The open public beta announcement was posted Monday April 1st and of course some thought it might be a cruel April Fools joke, but it was no joke.
This is pretty amazing stuff!
“tyFlow is an unofficial replacement for 3ds Max’s Particle Flow.
It is not merely an upgrade to Particle Flow — rather, it was created from scratch with a design philosophy focused on squeezing as much speed and power out of modern multi-core systems as possible. Its layout, UI and workflow are very similar to Particle Flow’s, so that anyone with past experience using Particle Flow will have no trouble making the switch.”
Check out some of the tests done in this beta on Instagram or Twitter using hashtag #TyFlow, and be sure to be sitting down.
Don't just take my word for it, check out CG Channel:
Tyson Ibele has released tyFlow in free open beta. The hotly tipped next-gen replacement for the 3dsMax ParticleFlow toolset provides fast, multithreaded multiphysics and crowd simulation tools bit.ly/2YIGhZ7
If you are interested, go have a look at the beta.