A free Navisworks alternative that runs in your browser

Navisworks is powerful, expensive, and hasn't meaningfully changed in a decade. But most teams don't use most of it. The daily job is simpler: load the IFC models, find where disciplines collide, review the clashes in 3D, and hand the issues back as BCF. You shouldn't need a paid seat and a desktop install for that.

ClashControl does exactly that loop — free, in the browser:

• Drop in one or more IFC models
• Set your clash matrix — which disciplines must never collide, and which need clearance (hard and soft clashes)
• Run detection and walk the results in 3D, with section planes to cut into the mess
• Export BCF 2.1 straight into whatever your team already uses

No license. No install. No subscription. It's not trying to replace every Navisworks workflow — it nails the coordination loop you actually run every day, and gets out of your way.

FAQ

Is it really free?

Yes — the core tool is free and open-source. No seat cost, no trial clock.

Does it export to Navisworks-compatible formats?

It exports BCF 2.1 and 3.0, the open issue standard most coordination tools (including Navisworks) can read. BCF import is supported too, so issues round-trip cleanly.

Do I need to install anything?

No. It runs in the browser. It's also a PWA, so it works offline and can run on localhost if your models can't leave the network.

Which authoring tools can it read?

Anything that exports IFC — Revit, Archicad, Tekla, and more. IFC 2x3 and IFC4 are supported.