IfcOpenShell/IfcOpenShell

Health v2 · maintenance only

Adoption not part of the score

2733 stars · 952 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

IfcOpenShell is an open source C++ and Python library for parsing and working with Industry Foundation Classes (IFC) building models, including a geometry engine and format conversion tools. Its ecosystem includes IfcConvert for converting IFC models and Bonsai, a Blender add-on for graphical IFC authoring.

Use cases

• parse and manipulate IFC building models in Python
• convert IFC files to OBJ, DAE, or other 3D formats
• author and edit native IFC models in Blender
• extract geometry from BIM models programmatically
• read and write BCF-XML issue files
• validate IFC files against IDS specifications

When to choose

• you need open source, scriptable IFC parsing without vendor lock-in
• you want to build BIM tooling in C++ or Python
• you need a free graphical IFC editor via Blender
• you must support multiple IFC schema versions including IFC4x3

When to avoid

• you need a lightweight web-based IFC viewer rather than a full library
• you require certified commercial BIM software support
• your workflow depends on proprietary CAD formats like Revit RVT natively

Facets

library · maturity active

parser sdk image-processing cli plugin-system simulation developer-tools cross-platform graphics cpp python cross-platform ifc bim building-information-modeling geometry-engine blender-addon aec cad ifcconvert bonsai construction desktop

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