It coexists with Revit right now, and is a good place to do feasibility and early design and get instant metrics and feedback. We think it's a lot more collaborative and design friendly.

One day we'd love to take them on directly, I think there's a lot of architects out there looking for something better.

As far as collaboration features, we've built it from the ground up with collaboration in mind, so you can work with other users directly in the same scene and see their actions and updates. We've got collaborative presentation boards with views and metrics that can update live, and of course workflow features like commenting. And since it's browser based, there's not the friction of installing a desktop app, which can be significant at some orgs.

We'd love to know what you think though, give it a try and let us know what collaboration features you'd use!