It's truly interestering. We considered it, and we didn't like it. It seems something born to be "vendor lock-in" plus the fact that it looks super volatile (a bad combination). We are sure that our current EDA tools will at least stick around for a while.

And it's browser based. Opening any of the examples on the main page with firefox lifted up my PC like a hovercraft by the way the fans started to spin, with several seconds delay for any interaction (on a PC that's capable of running Altium and Orcad).

PS: I love the animation on the main page and how the mechanical engineer has no idea on what's going on!