We've been working on a Marmoset Toolbag 3 plugin for Houdini for some time now.. (GameDevToolset)
And we would like to get some feedback from the userbase.
It should be part of release 1.23 or newer!
Please do note that you need a valid license for Toolbag 3, but you can use a trial license for testing aswell.

https://www.sidefx.com/tutorials/game-tools-marmoset-toolbag-rop/ [www.sidefx.com]