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I want to write code

IfcOpenShell C++

IfcOpenShell C++ offers classes and functions to read, write, and modify all IFC schemas, serialisations, and geometry. Based on the OpenCASCADE geometry kernel, IfcOpenShell C++ offers multicore conversion of implicit IFC geometry into explicit polygons for use in CAD systems. Perform geometric analysis through BVH trees, voxels, and 2D drawing generation.

IfcOpenShell Python

The speed and features of IfcOpenShell C++ through Python. Comes with a utility module that reduces common model analysis tasks to one line of code. Offers a high level API for native IFC authoring usecases across all disciplines, whether its adding objects, managing classifications and documents, connecting distribution ports, or critical path analysis.

I need an app for my workflow

IfcConvert

Convert from IFC to OBJ, DAE, GLB/GLTF, STP, IGS, XML, SVG, and H5. Includes options for multithreaded support, element filtering, geometry validation, coordinates, and units.

Bonsai

A rich, graphical native IFC authoring environment based on Blender. View and create models, drawings, and manage BIM data. Everything can be automated via a Python interface.