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This group of forums is created for OCCT users to exchange and share experience and information. OPEN CASCADE team revises the forums and may post some guidelines from time to time but community users are the primary participants. If you need professional assistance from OPEN CASCADE experts please consider subscribing to our support services.
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Forum about general usage of OCCT libraries.
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Forum about installation and building of OCCT libraries.
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Forum about using Draw and OCCT samples.
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Forum about OPEN CASCADE end user applications
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Place for various announcements concerning OCCT software.
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Announcements of OCCT releases.
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Various announcements by OPEN CASCADE.
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Place for discussing community projects where OCCT is used. Please contact us for opening a forum about your project based on OCCT libraries.

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Forum about various community projects.

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FreeCAD by Jürgen Riegel ( is a general purpose feature-based, parametric 3D modeler.

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HeeksCAD by Daniel Heeks ( is a free, open source, CAD application.

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exoTK by Stephane Routelous ( is a high level class library used to build a 3d solid modeler (exoTKAD).

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jCAE by Guillaume Alléon ( is a JAVA based environment for CAE applications.

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PythonOCC by Thomas Paviot ( is a Python wrapper for Open CASCADE Technology.

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NaroCAD by Ciprian Mustiata ( is a 3D parametric modeling CAD application.

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OCCT port to Borland C++ by Fotis Sioutis (

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OpenShapefactory is a Qt-based Geometry Factory that provides a single-point of entry to the most of OCCT geometrical operations.

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