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object-src 'none'; report-uri /w/api.php?action=cspreport&format=json; report-to csp-report-to-endpoint last-modified: Thu, 02 Jul 2026 16:16:51 GMT content-type: text/html; charset=UTF-8 age: 2 accept-ranges: bytes x-cache: cp2047 miss, cp2047 miss x-cache-status: miss server-timing: cache;desc="miss", host;desc="cp2047" strict-transport-security: max-age=106384710; includeSubDomains; preload report-to: { "group": "wm_nel", "max_age": 604800, "endpoints": [{ "url": "https://intake-logging.wikimedia.org/v1/events?stream=w3c.reportingapi.network_error&schema_uri=/w3c/reportingapi/network_error/1.0.0" }] } nel: { "report_to": "wm_nel", "max_age": 604800, "failure_fraction": 0.05, "success_fraction": 0.0} set-cookie: WMF-Last-Access=03-Jul-2026;Path=/;HttpOnly;secure;Expires=Tue, 04 Aug 2026 00:00:00 GMT set-cookie: WMF-Last-Access-Global=03-Jul-2026;Path=/;Domain=.wikipedia.org;HttpOnly;secure;Expires=Tue, 04 Aug 2026 00:00:00 GMT set-cookie: WMF-DP=2ce;Path=/;HttpOnly;secure;Expires=Fri, 03 Jul 2026 00:00:00 GMT x-client-ip: 75.28.18.94 cache-control: private, s-maxage=0, max-age=0, must-revalidate, no-transform vary: Accept-Encoding,X-Subdomain,Cookie,Authorization,User-Agent set-cookie: GeoIP=US:TX:McKinney:33.20:-96.62:v4; Path=/; secure; Domain=.wikipedia.org set-cookie: NetworkProbeLimit=0.001;Path=/;Secure;SameSite=None;Max-Age=3600 set-cookie: WMF-Uniq=Rx4STkHTqtMuzmFLyljRwgOSAAAAAFvd-2Fcj8Lb-lDK_qvn_pN8nHbDWU-ZPww7;Domain=.wikipedia.org;Path=/;HttpOnly;secure;SameSite=None;Expires=Sat, 03 Jul 2027 00:00:00 GMT transfer-encoding: chunked x-request-id: 823faa84-a949-4087-bf69-463f9ad03ca8 x-analytics: 8000 Open Cascade Technology - Wikipedia Jump to content Main menu Main menu move to sidebar hide Navigation Main page Contents Current events Random article About Wikipedia Contact us Contribute Help Learn to edit Community portal Recent changes Upload file Special pages Search Search Appearance Donate Create account Log in Personal tools Donate Create account Log in Contents move to sidebar hide (Top) 1 History Toggle History subsection 1.1 Open sourcing 1.2 Community fork 1.3 Collaborative development portal 1.4 License change 2 Functions Toggle Functions subsection 2.1 Object libraries 2.2 Workshop Organization Kit 2.3 Working with IFC files 3 CAD programs based on Open Cascade Technology 4 See also 5 References Toggle the table of contents Open Cascade Technology 9 languages Català Deutsch Français Italiano 日本語 Português Русский Українська 閩南語 / Bân-lâm-gí Edit links Article Talk English Read Edit View history Tools Tools move to sidebar hide Actions Read Edit View history General What links here Related changes Upload file Permanent link Page information Cite this page Get shortened URL Switch to legacy parser Print/export Download as PDF Printable version In other projects Wikidata item Appearance move to sidebar hide From Wikipedia, the free encyclopedia Open-source 3D modelling software This article relies excessively on references to primary sources . Please improve this article by adding secondary or tertiary sources . Find sources: "Open Cascade Technology" – news · newspapers · books · scholar · JSTOR ( April 2007 ) ( Learn how and when to remove this message ) {{cite web |url=https://git.dev.opencascade.org/gitweb/?p=occt.git;a=blob;f=README.txt |title=README.txt |access-date=11 January 2022 |archive-date=22 August 2021 |archive-url=https://web.archive.org/web/20210822132619/http://git.dev.opencascade.org/gitweb/?p=occt.git;a=blob;f=README.txt |url-status=live }}</ref> with exception<ref name=\"licensing\"/>"},"website":{"wt":"{{URL|dev.opencascade.org}}"}},"i":0}}]}'> Open Cascade Technology OpenCASCADE Screenshot Developer Open Cascade S.A.S.U. Release 1999 ; 27 years ago ( 1999 ) Stable release 8.0.0 [ 1 ] / 7 May 2026 ; 57 days ago ( 7 May 2026 ) Written in C++ Operating system Linux , FreeBSD , macOS , Windows , Android , iOS , WebAssembly Platform IA-32 , x86-64 , ARM Type CAD , CAM , CAE License LGPL 2.1 only [ 2 ] with exception [ 3 ] Website dev .opencascade .org Repository git .dev .opencascade .org /gitweb /?p=occt .git Open Cascade Technology ( OCCT , formerly named CAS.CADE ) is an object-oriented C++ class library for 3D computer-aided design (CAD), computer-aided manufacturing (CAM), computer-aided engineering (CAE), etc. [ 4 ] It is developed and supported by Open Cascade SAS company. It is free and open-source software released under the GNU Lesser General Public License (LGPL), version 2.1 only, which permits open source and proprietary uses. OCCT is a full-scale boundary representation (B-rep) modeling toolkit. History [ edit ] CAS.CADE (abbreviated from Computer Aided Software for Computer Aided Design and Engineering) was originally developed in the early 1990s by Matra Datavision, developer of Euclid CAD software as the underlying infrastructure for its future version Euclid Quantum. In 1998 the company abandoned software development to concentrate on services, and most of the software development facilities were sold [ 5 ] to Dassault Systèmes , developer of competing CATIA . Product name Release date Latest update version Latest update date Highlights Open CASCADE Technology 8.0 2026-05-07 8.0.0 2026-05-07 Upgraded minimum C++ standard to C++17; deprecated global math wrappers in favour of std:: functions. Source tree reorganized to src/Module/Toolkit/Package/File ; documentation generation moved to CMake. ARM64 is now a first-class target on macOS and Windows; GTest adopted as standard unit-testing framework. Introduced BRepGraph : new graph-based representation of B-Rep topology with bidirectional traversal and history tracking. Redesigned geometry evaluation hierarchy with POD result structs ( Geom_CurveD1 / D2 / D3 ). New differential-properties packages (GeomProp, Geom2dProp, BRepProp) replacing the legacy LProp family. Added new collection types: NCollection_FlatMap, NCollection_OrderedMap, NCollection_KDTree. Added GeomFill_Gordon (transfinite interpolation) and TKHelix (geometric helix toolkit). STEP export ~20% smaller file size; improved concurrent-operation safety in STEP/IGES read–write. Improved glTF /OBJ/IGES support for non-uniform scaling, line types and edge preservation. Unified shader-based grid path (OpenGL 3.2+) with sub-pixel antialiasing; improved selection pipeline. VTK no longer enabled by default (requires USE_VTK=ON ). Open CASCADE Technology 7.6 2021-11-03 7.6.2 2022-04-29 Added progress indication–abortion to Boolean operations and offset algorithm. Added support of kinematics entities to STEP reader. Introduced interface for partial OCAF document reading. Open CASCADE Technology 7.5 2020-11-05 7.5.3 2021-08-06 Real-time physically based rendering (PBR) using metallic-roughness material model. WebAssembly target platform support (including WebGL viewer). UNICODE support in STEP reader–writer. Open CASCADE Technology 7.4 2019-10-01 — N/a — N/a Improved BRepMesh performance, robustness and accuracy. Improved robustness and stability of Boolean operations and Extrema. Improved performance of built-in parallelization tools (OSD_Parallel). Added glTF 2.0 and OBJ readers. Added AIS_ViewController mapping user input to 3D viewer camera manipulations. Added support of 3/4 and box clipping configurations to 3D viewer. Added fast HLR-alike OpenGL rendering mode. Removed legacy local context functionality from AIS and legacy Boolean operations. Open CASCADE Technology 7.3 2018-05-29 — N/a — N/a Added algorithm constructing OBB (oriented bounding box). Optimized surface intersection, shape offset and Boolean operation algorithms. Added distance and size culling rendering features. Added support of UNICODE filenames with MinGW-w64. Open CASCADE Technology 7.2 2017-08-31 — N/a — N/a Added support of OCAF binary files larger than 2 GiB. Added "Glue" [ 6 ] option to Boolean algorithms. Added support of annotations, saved views and clipping planes to STEP and XDE. Added Weighted OIT ( Order-independent transparency ) rendering feature. Path Tracing engine improvements. Open CASCADE Technology 7.1 2016-11-25 — N/a — N/a OCAF persistence without dynamically loaded plugins. Improved STEP AP242 support, including PMI, dimensions and annotations. Improved rendering performance of Wireframe AIS_Shape presentation. Added AIS_Manipulator for interactive object transformations in 3D viewer. TKOpenGl now uses GLSL programs by default. Open CASCADE Technology 7.0 2016-04-05 — N/a — N/a WOK (Workshop Organization Kit) has been replaced by CMake building scripts. CDL files have been replaced by pre-generated C++ headers. Open CASCADE Technology 6.9 2015-05-12 6.9.1 2015-09-28 Introduced "Fuzzy" [ 7 ] Boolean operations with specified global tolerance. Introduced built-in multi-threading parallelization tools as alternative to Threading Building Blocks (TBB) library . Improved robustness of surface-surface intersection and curve on surface projection. Improved performance of p-curve reconstruction within STEP import. Improved compatibility with OpenGL ES 2.0. Open CASCADE Technology 6.8 2014-11-10 — N/a — N/a Added support of UNICODE ( UTF-8 ) filenames. Added STL-compatible iterators to NCollection classes. "Handle" smart-pointer now uses NULL pointer instead of a special value 0xfefd0000. Added bounding volume hierarchy (BVH) algorithms and structures. Introduced multi-threaded version of Boolean operation algorithm. Introduced limited OpenGL ES 2.0 support in 3D viewer. Added VIS–TKIVtk component [ 8 ] providing a B-Rep shape presentation builder for VTK viewer. Added support of stereoscopic displays [ 9 ] within 3D viewer. Added frustum culling feature improving rendering performance. Ray-Tracing engine has been switched from OpenCL to GLSL implementation. Open CASCADE Technology 6.7 2013-12-18 6.7.1 2014-04-30 License changed to LGPL-2.1-only with added exception. [ 3 ] Built-in GPU-accelerated Ray-Tracing rendering engine [ 10 ] using OpenCL . Open CASCADE Technology 6.6 2013-04-22 — N/a — N/a Open CASCADE Technology 6.5 2011-04-04 6.5.5 2013-03-29 Open CASCADE Technology 6.4 2010-09-30 — N/a — N/a Added multi-threaded mode to BRepMesh algorithm (introduced optional TBB library support). Improved rendering performance by using Vertex buffer object (VBO). TKOpenGl implementation converted from C to C++ classes. Improved text rendering with help of FTGL and FreeType libraries. Improved algorithms for line-line, line-plane and plane-plane intersection. Open CASCADE Technology 6.3 2008-09-03 6.3.1 2009-06-19 Open CASCADE Technology 6.2 ? 6.2.1 2007-12-06 Open CASCADE Technology 6.1 2006-03-24 6.1.1 2006-10-16 Open CASCADE Technology 5.2 ? 5.2.4 2005-07-29 Open CASCADE Technology 5.1 ? 5.1.3 2004-04-23 "Open CASCADE" has been renamed to "Open CASCADE Technology". Open CASCADE 4.0 2001-12-11 — N/a — N/a Open CASCADE 3.0 2000-04-24 — N/a — N/a Open CASCADE 2.0 ? — N/a — N/a Open CASCADE 1.0 1999 — N/a — N/a Open sourcing [ edit ] In 1999 Matra Datavision decided to publish its CAS.CADE infrastructure under an open-source model under the Open CASCADE Technology Public License [ 11 ] and renamed it Open Cascade. [ 12 ] In 2000, a separate company, Open Cascade SAS, was created to make business around Open Cascade. [ 13 ] Open Cascade SAS was sold in 2003 to Principia, a French service provider corporation, and then in 2006 it was acquired by Euriware Group, a subsidiary of Areva . In 2004, software was renamed to Open Cascade Technology in order to distinguish it from the name of the company itself. Open Cascade S.A.S. provides a certified version of the library, which is released sporadically, usually 1–2 releases per year. [ 14 ] Until version 6.5.0 (2011), only minor and major versions were publicly available, while intermediate (maintenance) releases were accessible only to customers of Open Cascade S.A.S. For example, version 6.3.0 was publicly released in 2008, and the next public version 6.5.0 was released in early 2011. All recent releases starting from version 6.5.0 are public. [ 15 ] Community fork [ edit ] In March 2011, Thomas Paviot initiated a fork of the then most recent publicly available version 6.5.0 of Open Cascade library. The initiative is named Open Cascade Community Edition. The project aims to establish a separate community-based release and bug-report process for the library. [ 16 ] Collaborative development portal [ edit ] In December 2011, Open Cascade installed a web portal for external contributors [ 17 ] and made its Mantis Bug Tracker [ 18 ] and further Git repository [ 19 ] publicly available (read-only GitHub mirror [ 20 ] has been established in '2020). According to the statements on the new website, external contributors from the Open Source Community are encouraged to participate in the development of Open Cascade Technology, i.e. register bugs directly in the bugtracker , make contributions to the code after signing a Contributor License Agreement , [ 21 ] etc. License change [ edit ] Since 18 December 2013, with version 6.7.0, Open Cascade Technology is available under the LGPL-2.1-only with added exception. [ 3 ] [ 22 ] Versions before that were licensed under the "Open Cascade Technology Public License" which was not compatible with the GPL [ 23 ] and was considered non-free by the Fedora project . [ 24 ] Functions [ edit ] Object libraries [ edit ] OCCT's functionality is split into several large modules. Each module defines a list of toolkits ( libraries ). Key modules: Foundation Classes – defines basic classes, memory allocators, OS abstraction layer, collections (data maps, arrays, etc.), acceleration data structures ( BVH trees ) and vector/matrix math used by other Modules. Modeling Data – supplies data structures to represent 2D and 3D geometric primitives (analytical curves: Line, circle , ellipse , hyperbola, parabola , Bézier , B-spline , offset; analytical surfaces: plane, cylinder , cone , sphere , torus , Bézier , B-spline , revolution , extrusion, offset) and their compositions into boundary representation (B-rep) models. Modeling Algorithms – contains a vast range of geometrical and topological algorithms (intersection, Boolean operations, surface meshing , fillets , shape healing). Visualization (rendering) – provides interactive services for displaying geometry in 3D Viewer; implements a compact OpenGL – OpenGL ES renderer, supporting conventional Phong , real-time PBR metal-roughness shading models and interactive ray tracing – path tracing engine. Data Exchange – provides possibility to import–export various CAD formats. STEP , IGES , glTF , OBJ , STL , and VRML are supported natively. [ 25 ] Other formats can be imported by using plug-ins. [ 26 ] Extended Data Exchange (XDE) components rely on a unified XCAF document definition, which includes an assembly structure of CAD shapes, color/name/material/metadata/layer attributes and other supplementary information like product and manufacturing information (PMI). Application Framework – offers means to handle application-specific data. DRAW Test Harness – implements a scripting interface to OCCT algorithms based on Tcl -interpreter for interactive use, automating processes, prototyping applications and testing purposes. Workshop Organization Kit [ edit ] Workshop Organization Kit (WOK) is Open Cascade development environment, which has been designed to allow many developers to work on a product, exploiting one common reference version shared over a local area network (LAN). Until OCCT 7.0.0 release, substantial modifications in the source code were not possible without using WOK, since it is the only tool that provides support for CDL (CAS.CADE definition language), used for declaration of most of OCCT classes and also serving to define logical structure of OCCT libraries. WOK has been included in previous OCCT distributions; since OCCT version 6.4 it is made an independent tool. Within 7.0.0 release, all CDL files have been dropped from OCCT source code making WOK no longer necessary for OCCT development. Working with IFC files [ edit ] The Open CASCADE IFC Import SDK provides applications with the capability of reading building information modeling (BIM) data from files in Industry Foundation Classes (IFC) format. It supports versions IFC2×3 and IFC4 that used by most modern applications. [ 27 ] This allows visualizing and manipulating building geometries and CAD designs. External tools are available to convert from Open CASCADE to IFC also. [ 28 ] CAD programs based on Open Cascade Technology [ edit ] Several CAD programs rely on Open CASCADE Technology including: [ 29 ] FreeCAD an open-source 3D parametric modeler, with support for building information modeling , finite element method (FEM), and Python scripting. [ 30 ] [ 31 ] SALOME an open-source platform for pre- and post-processing for numerical simulation. KiCad an open-source suite for electronic design automation (EDA). [ 32 ] Gmsh an open-source finite-element mesh (FEM) generator. Since version 3.0, Gmsh supports full constructive solid geometry features, based on OCCT. FORAN an integrated CAD/CAM/CAE system developed by SENER for the design and production of practically any naval ship and offshore unit. FORAN uses OCCT since V80R2.0 release [ 33 ] for working with analytical surfaces. See also [ edit ] Free and open-source software portal Free hardware Computer-aided design Open Design Alliance Building information modeling Industry Foundation Classes References [ edit ] ↑ "Release 8.0.0" . 7 May 2026 . Retrieved 8 May 2026 . ↑ "README.txt" . Archived from the original on 22 August 2021 . Retrieved 11 January 2022 . 1 2 3 "OCCT license" . Archived from the original on 1 July 2021 . Retrieved 25 June 2021 . ↑ "Project Overview | Open CASCADE Technology" . dev.opencascade.org . Archived from the original on 16 May 2025 . Retrieved 11 May 2025 . ↑ "Dassault Systemes Signs Agreement to Acquire Matra Datavision's Subsidiary" . 27 January 2020. Archived from the original on 6 June 2020 . Retrieved 1 September 2018 . ↑ "Gluing Options in Boolean Component - Forum Open Cascade Technology" . dev.opencascade.org . Archived from the original on 18 August 2021 . Retrieved 18 August 2021 . ↑ "Fuzzy Boolean Operations - Forum Open Cascade Technology" . dev.opencascade.org . Archived from the original on 18 August 2021 . Retrieved 18 August 2021 . ↑ "VTK integration services in OCCT - Forum Open Cascade Technology" . dev.opencascade.org . Retrieved 18 August 2021 . ↑ "Stereoscopic rendering in Open CASCADE Technology - Forum Open Cascade Technology" . dev.opencascade.org . Archived from the original on 18 August 2021 . Retrieved 18 August 2021 . ↑ "Ray tracing as alternative rendering method for OCCT visualization component - Forum Open Cascade Technology" . dev.opencascade.org . Archived from the original on 18 August 2021 . Retrieved 18 August 2021 . ↑ "Open CASCADE Technology Public License" . Archived from the original on 7 December 2014 . Retrieved 4 December 2014 . ↑ "Downloading Of Source Code For Open Cascade Gains Momentum | Market Wire | Find Articles" . 9 April 2012. Archived from the original on 9 April 2012 . Retrieved 22 November 2021 . ↑ European e-Business Market Watch Case Study: Open source-based services by Open Cascade S.A. Archived 26 July 2011 at the Wayback Machine ↑ "OCCT Previous Releases" . Archived from the original on 30 June 2021 . Retrieved 25 June 2021 . ↑ "Becoming more and more open!" . Archived from the original on 19 June 2011 . Retrieved 21 June 2011 . ↑ "Thinkings about the 6.5.0 release, OCCT status, and the relationship with the Community" . Archived from the original on 16 April 2011 . Retrieved 15 April 2011 . ↑ "Opening the Development of Open CASCADE Technology" . Archived from the original on 23 January 2012 . Retrieved 7 February 2012 . ↑ "Mantis Bug Tracker for OCCT project" . ↑ "GitWeb interface to main OCCT git repository" . Archived from the original on 29 October 2013 . Retrieved 28 April 2012 . ↑ "Passive mirror of OCCT git repository on GitHub" . GitHub . Archived from the original on 14 September 2020 . Retrieved 4 August 2020 . ↑ "Signing the Contributor License Agreement" . Archived from the original on 1 September 2018 . Retrieved 1 September 2018 . ↑ "Relicensing OCCT - Forum Open Cascade Technology" . dev.opencascade.org . Archived from the original on 22 November 2021 . Retrieved 22 November 2021 . ↑ "OCCT FAQ" . dev.opencascade.org . Open Cascade. Archived from the original on 29 June 2021 . Retrieved 25 June 2021 . ↑ Callaway, Tom. "Licensing:Main – Bad Licenses" . fedoraproject.org . Red Hat, Inc. and others. Archived from the original on 6 March 2016 . Retrieved 18 May 2013 . ↑ "Data Exchange | Open CASCADE Technology" . dev.opencascade.org . Retrieved 22 November 2021 . ↑ "Datakit" . Open Cascade.com . Archived from the original on 22 November 2021 . Retrieved 22 November 2021 . ↑ "Open CASCADE: IFC Import Component" . Archived from the original on 15 November 2022 . Retrieved 15 November 2022 . ↑ "CAD Exchanger: How to convert Open CASCADE to IFC?" . Archived from the original on 15 November 2022 . Retrieved 15 November 2022 . ↑ Open Cascade SAS. "Projects and products" Archived 1 October 2024 at the Wayback Machine . ↑ Okoi, Martins (1 December 2017). "FreeCAD – A 3D Modeling and Design Software for Linux" . FOSSMint . Archived from the original on 15 December 2017 . Retrieved 2 May 2019 . ↑ Lee, Hawk (22 June 2018). "FreeCAD FEM Workbench (Calculix 2.14)" . Archived from the original on 3 May 2019 . Retrieved 2 May 2019 . ↑ KiCad "Library Dependencies" Archived 19 September 2024 at the Wayback Machine . ↑ "SENER's latest version of FORAN V80R2.0 lets users manage series of ships" . 19 July 2016. Archived from the original on 21 August 2018 . Retriev 8000 ed 4 August 2020 . v t e Computer-aided design (CAD) software Free and open-source Mechanical 2D (CADD) LibreCAD QCAD rattleCAD SteamCAD XTrackCAD [ uk ] 2D/3D (CAx/FEx) BRL-CAD FreeCAD FREE!ship [ uk ] gCAD3D LeoCAD OpenRocket [ uk ] OpenSCAD OpenVSP Salome SolveSpace XFLR5 [ uk ] Architectural (AEC) Sweet Home 3D Electrical Electric FreePCB Fritzing gEDA Horizon EDA KiCad kTechLab Magic ngspice Oregano pcb-rnd QUCS SPICE XCircuit Optical Astree/Foucault2 ATMOS Geopter Inkscape#Ray Optics FreeCAD#Optics Workbench Garment Inkscape#Ink/Stitch Valentina Proprietary Mechanical ABViewer Alibre Design AutoCAD Autodesk Alias Autodesk Inventor AutoTURN BrickLink Studio BricsCAD CATIA Cimatron Cobalt Creo Elements/Direct Drafting Creo Parametric DesignSpark Mechanical FastCAD (EasyCAD) FINE FORAN Fusion 360 GstarCAD IRONCAD KeyCreator ( CADKEY ) Lego Digital Designer MEDUSA4 MicroStation NX Onshape PDMS Pro/DESKTOP Rhinoceros 3D Grasshopper 3D rattleCAD 4.0 Shapr3D Solid Edge SolidWorks Sonata ( RUCAPS ) SpaceClaim T-FLEX CAD Tinkercad TurboCAD VariCAD ZWCAD Architectural (AEC) Archicad Autodesk Revit LIRA [ uk ] List of building information modeling software Electrical Allegro ( OrCAD ) Altium Designer ( Protel ( Autotrax ( Easytrax , Tango PCB )), P-CAD ) AutoCAD Electrical BoardStation, IntegraStation, PADS, Xpedition CADSTAR CircuitMaker CR-2000, CR-3000 , CR-5000 , CR-8000 DesignSpark PCB DipTrace EAGLE EasyEDA LTspice Micro-Cap Multisim PCB Proteus Pulsonix SolidWorks Electrical TARGET TopoR ( Delta Design , FreeStyle ) Ultiboard Upverter Optical Aber OSLO Zemax Garment Clo3D Embird File formats 3MF ACIS AMF C3D CKD DSN DWF DWFX DWG DXF IGES OBJ OpenDWG PLY PSpice SES STEP STL Modeling kernels ACIS C3D Digital Geometric Kernel ( KernelCAD ) IntelliCAD Open Cascade Technology Open Design Alliance ( Teigha ) Romulus ( Parasolid ) RGK ShapeManager SMLib Historic DAC-1 (1963) Sketchpad (1963) UNISURF (1968) Italics = discontinued Computer-aided industrial design • Comparison • History Media related to CAD at Wikimedia Commons • Engineering portal • Glossary of terms v t e Computer-aided manufacturing (CAM) software Open source LinuxCNC Open CASCADE Technology FreeCAD Blender Proprietary AutoCAD Autodesk Fusion Autodesk Inventor BricsCAD CATIA Cimatron Creo Parametric Delcam Edgecam FORAN Mastercam MazaCAM NC-CAM Onshape PowerMILL Siemens NX SmartCAM Solid Edge SprutCAM Tebis TopSolid Vericut VoluMill WorkNC v t e Computer-aided engineering (CAE) software Open-source Advanced Simulation Library Calculix Code Saturne deal.II Elmer FEBio FEniCS FreeCAD FreeFem++ Gerris GetFEM++ MOOSE Nek5000 Nektar++ Open Cascade Technology OpenFOAM QBlade Salome SU2 Proprietary Abaqus Actran ADINA Altair Ansys Autodesk Simulation CATIA COMSOL Multiphysics CST Studio Suite DIANA FEATool Multiphysics Femap Fluent FORAN JCMsuite JMAG KIVA LS-DYNA MSC Adams MSC Marc Nastran PTC Creo RFEM Sesam Siemens NX Simcenter STAR-CCM+ SolidWorks Cloud-based SimScale CONSELF Onshape Retrieved from " https://en.wikipedia.org/w/index.php?title=Open_Cascade_Technology&oldid=1357985683 " Categories : Free computer-aided design software Free software programmed in C++ Computer-aided design software for Linux Computer-aided manufacturing software for Linux Computer-aided engineering software for Linux 3D graphics software Software using the GNU Lesser General Public License Hidden categories: Articles with short description Short description is different from Wikidata Use dmy dates from August 2017 Articles lacking reliable references from April 2007 All articles lacking reliable references Webarchive template wayback links This page was last edited on 5 June 2026, at 21:40  (UTC) . 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