IfcOpenShell is an open source (LGPL) software library for working with Industry Foundation Classes (IFC). Complete parsing support is provided for IFC2x3 TC1, IFC4 Add2 TC1, IFC4x1, IFC4x2, and IFC4x3 Add2. Extensive geometric support is implemented for the IFC releases IFC2x3 TC1 and IFC4 Add2 TC1. Extending with support for arbitrary IFC schemas is possible at compile-time when using C++ and at run-time when using Python.

In addition to a C++ and Python API, IfcOpenShell comes with an ecosystem of tools, notably including IfcConvert (an application to convert IFC models to other formats), Bonsai (an add-on to Blender providing a graphical IFC authoring platform), and many other libraries, CLI apps, and more. Support is also provided for auxiliary standards such as BCF and IDS.

For more information, see:

• IfcOpenShell Website
• IfcOpenShell Documentation
  • IfcOpenShell C++ Installation
  • IfcOpenShell Python Installation
  • IfcOpenShell Python Hello World Tutorial
• Bonsai Website
• Bonsai Documentation
  • Add-on Installation
  • Exploring an IFC model

Development is sponsored through your generous donations!

Name	Description	License	Service
bcf	Library to read and write BCF-XML and query OpenCDE BCF-API modules	LGPL-3.0-or-later
bonsai	Add-on to Blender providing a graphical native IFC authoring platform	GPL-3.0-or-later
bsdd	Library to query the bSDD API	LGPL-3.0-or-later
ifc2ca	Utility to convert IFC structural analysis models to Code_Aster	LGPL-3.0-or-later
ifc4d	Convert to and from IFC and project management software	LGPL-3.0-or-later
ifc5d	Report and optimise cost information from IFC	LGPL-3.0-or-later
ifcbimtester	Wrapper for Gherkin based unit testing for IFC models	LGPL-3.0-or-later
ifcblender	Historic Blender IFC import add-on	LGPL-3.0-or-later*
ifccityjson	Convert CityJSON to IFC	LGPL-3.0-or-later
ifcclash	Clash detection library and CLI app	LGPL-3.0-or-later
ifcconvert	CLI app to convert IFC to many other formats	LGPL-3.0-or-later*
ifccsv	Library and CLI app to export and import schedules from IFC	LGPL-3.0-or-later
ifcdiff	Compare changes between IFC models	LGPL-3.0-or-later
ifcfm	Extract IFC data for FM handover requirements	LGPL-3.0-or-later
ifcmax	Historic extension for IFC support in 3DS Max	LGPL-3.0-or-later*
ifcopenshell-python	Python library for IFC manipulation	LGPL-3.0-or-later*	Pyodide WASM Wheels
ifcpatch	Utility to run pre-packaged scripts to manipulate IFCs	LGPL-3.0-or-later
ifcsverchok	Blender Add-on for visual node programming with IFC	GPL-3.0-or-later
ifctester	Library, CLI and webapp for IDS model auditing	LGPL-3.0-or-later

The IfcOpenShell C++ codebase is split into multiple interal libraries: