A rules-based BIM model-checking and coordination tool built around open IFC. A model-checking and coordination platform (now owned by Nemetschek) built specifically around openBIM and IFC, rather than any single authoring tool. Solibri's strength is rule-based checking: instead of just visually spotting clashes, it can automatically verify a model against a defined rule set - fire-escape distances, accessibility clearances, missing information, LOD compliance - and flag every violation in a structured report.

It is a common alternative or companion to Navisworks, especially on projects that lean heavily on openBIM workflows and want checking that goes beyond geometric clashes into actual information quality.