Engineering workflows
OCCT3D engineering
Technology and services for 3D software
CAD SDKs, file conversion and 3D software development built around Open CASCADE Technology (OCCT), with commercial support and training.
Since 2000OCCT developed in open source
Open + commercialtechnology paths
One product stack. Open-source foundation, commercial components, and application code.
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Browse by workflow, industry, or product
Start with the engineering task, industry context, or application closest to your project.
Industry expertise
Industries
Application requirements across machinery, transport, energy, healthcare, marine, and infrastructure.Ready-to-use applications
End-user products
CAD Assistant, CAD Processor, CAD Builder, and CADRays reference information.Technical articles
Engineering articles
Detailed OCCT articles on geometry, topology, visualization, data exchange, and platform development, including the Deep into Kernel series.Commercial components
DevTools for OCCT applications
Bring CAD review and file exchange into your application. Start with .NET integration, DXF drawings, or ACIS models, then explore the wider catalog.
Developer tooling
C# Wrapper
Add CAD viewing, measurement, geometry processing, and file exchange to C# and .NET applications your users already work with.View details
Data exchange
DXF Import-Export
Connect DXF drawings and supported 3D data with your CAD application for review, conversion, and manufacturing preparation.View details
Data exchange
ACIS Import-Export
Bring ACIS SAT and SAB models into your CAD workflow, exchange geometry with other systems, and keep names and colors with each part.View detailsServices and training
Expertise for your OCCT project
Get help with integration, investigation, team training, maintenance, or a complete application work package.
Technical support
OCCT questions, investigation, and consulting
Use a support-unit package for technical questions, scheduled investigation, consulting, corrections, and training.
Discover supportTraining
Instructor-led OCCT and SALOME courses
Choose standard online or on-site courses, or adapt the exercises to a team project.
Explore trainingCustom engineering
Consulting and custom 3D application development
Architecture review, bug fixing, development, integration, customization, and maintenance for OCCT-based software.
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News from OCCT3D
Open CASCADE Technology 8.0.1 is now available!
OCCT 8.0.1 is the first regular maintenance release in the 8.0 series. It consolidates fixes, performance improvements, and build updates introduced after 8.0.0p1.
Open CASCADE C# Wrapper Updated for OCCT 8.0.0
Open CASCADE C# Wrapper has been updated for Open CASCADE Technology 8.0.0. This release extends platform coverage, improves .NET integration, resolves string conversion issues, and expands the set of wrapped OCCT classes available from C# applications.…
Preparing OCCT3D Added-Value Components for the 8.0.0 generation
Together with the upcoming OCCT 8.0.0 release, Open Cascade is preparing the next generation of OCCT Added-Value Components. These components extend Open CASCADE Technology with additional capabilities for industrial software development. They are used by…
Open-source platform
Open CASCADE Technology
OCCT is a C++ platform for 3D geometry, topology, visualization, data exchange, and application data.
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