Stonn is a 3D viewer that allows you to load LandXML, IFC, GeoJSON and TopoJSON files in the same workspace and see a full project in one place.

* What does this fix? - Instead of having to move around between teams with single copies of your Civil3D, Reviit, Rhino, etc. files, you can load everything here to view for example: terrain displacement or maybe a building construction in time (it's in the feature list!) and pack everything in a .sff federated file that contains everything and you can share between teams without hassle. This streamlines a lot the work between teams.

It's also optimized for loading massive files, we tested it with gibibyte sized LandXMLs (around 12m triangles) while still being responsive (~20-30 fps) on iGPU.

We're still planning the revenue model (the CLI tool and viewer will probably remain free), so for now, enjoy it for free!

Oh! Any comments appreciated, I've been blindsided into this BIM/terrain/3D domain so I'm bound to make a lot of mistakes and learn a lot!