Ask HN: What happened to SecuriCAD and what are good alternatives?

I'm looking for best possible solution for building threat models and attack path analysis. I watched few presentations about SecuriCAD by Foreseeti which looked very impressive however their website seems to be down for sometime and looks like they disappeared.

Did they rebranded or dissolved? Are there any other threat modelling tools that have similar functionality to what SecuriCAD was offering?