Read, convert and preserve
Select readers and writers by format and by the information that must survive: precise geometry, mesh, assemblies, appearance or metadata. Compare the exchange matrix and conversion workflows.
Ready-to-integrate technology
CAD SDKs and components
Commercial components for CAD exchange, geometry processing, visualization, meshing, and application integration.
01 Built around real engineering workflows02 Flexible licensing and expert integration03 Designed to work with your architecture
Choose by engineering task
Start with the data and the result you need
Prepare and analyze geometry
Express Mesh tessellates CAD surfaces; Surface Wrapping builds an envelope from tessellation. BRepGraph Advance combines graph-native modeling, meshing and topology analysis.
Build the application experience
Use Light Web Viewer for browser inspection, C# bindings for .NET integration, or Advanced Samples to study document, exchange and healing workflows.
Component catalog
Find the right building block
24 DevTools
Advanced samplesSamples
Explore advanced OCCT integration samples covering OCAF, XDE and shape healing for CAD application developers.Discover
Language integrationWrappers
Explore language wrappers for integrating OCCT into C# and Java applications, and discuss the delivery needed for your project.Discover
Developer toolingC# Wrapper
Use Open CASCADE geometry and CAD functionality from C# and .NET applications. Explore OCCT3D wrapper integration and platform support.Discover
Web visualizationLight Web Viewer Component
Embed interactive 3D CAD visualization into web applications, engineering portals and product catalogs with the Light Web Viewer component.Discover
Scientific visualizationVolume Rendering Component
Integrate volumetric data visualization into engineering applications with the OCCT3D Volume Rendering SDK.DiscoverBRepGraph Advance
Advanced BRepGraph modeling, healing, meshing and topology analysis, with eight language wrappers, e-learning, training and integration support.Discover
Manufacturing informationPMI Visualization Technology
Add product manufacturing information and GD&T annotations to 3D engineering applications for inspection and design review.Discover
MeshingExpress Mesh Component
Generate surface meshes from CAD BRep shapes with Express Mesh. Control element size and deflection for visualization and downstream processing.DiscoverCAD Simplification
Plan CAD model simplification around the geometry, detail and accuracy needed for visualization, simulation and data exchange.Discover
Geometry processingSurface Wrapping
Generate watertight surface meshes from dirty tessellation using inner or outer wrapping, with control over mesh resolution.Discover
Surface reconstructionSurface from Scattered Points Component
Fit CAD surfaces to scattered points and geometric constraints. Integrate surface reconstruction into scanning and reverse-engineering workflows.Discover
ManufacturingUnfolding Component
Calculate flat blanks from 3D sheet geometry with the Unfolding component. Evaluate deformation and accuracy for material preparation.Discover
MetrologyBestFit Component
Align scanned point clouds with CAD models using BestFit. Integrate scan-to-CAD registration into dimensional inspection and metrology software.Discover
Feature intelligenceCanonical Recognition Component
Recognize analytic curves and surfaces in NURBS CAD geometry with controlled tolerance. Integrate Canonical Recognition into OCCT applications.Discover
Assembly analysisCollision Detection Component
Add mesh-based collision and proximity checks to CAD applications, with configurable precision and support for positioned assembly components.Discover
Manufacturing automationCAM Library Component
Integrate contour processing, offsets, pocketing and geodesic calculations into CAM applications with the OCCT3D CAM Library.Discover
Data exchangeParasolid Import Component
Import Parasolid X_T and X_B files into OCCT (Open CASCADE). Build STEP conversion with a commercial CAD reader for geometry, names and colors.Discover
Data exchangeJT Import-Export Component
Commercial JT SDK for OCCT: read and write meshes and assemblies, with Parasolid interface support for embedded BRep import and STEP conversion.Discover
Data exchangeDXF Import-Export Component
Read and write DXF geometry and attributes in CAD applications, including workflows with embedded ACIS bodies.Discover
Data exchangeACIS Import-Export Component
Read and write ACIS SAT and SAB data in CAD applications. Connect ACIS geometry to STEP conversion and other CAD workflows.Discover
Mesh processingMesh Framework Component
Add mesh data support to CAD applications for engineering pre-processing, post-processing and mesh visualization.DiscoverSTEP XML Reader & Writer
Read and write STEP XML files with assemblies, names, colors and STEP attributes. Support for STPX, STPA, STPZ and STPZX in OCCT3D applications.DiscoverAssimp Import
Import meshes, colors, materials and scene structure through the OCCT3D Assimp integration. Connect multiple asset formats to engineering applications.DiscoverUSD Import & Export
Read and write USD, USDZ and USDA scenes with meshes, primitives, names, hierarchy, colors, metadata, materials and animations.DiscoverNo DevTools match this filter.
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