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Open Cascade Technology: Technology, History & Companies

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. 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…

Language: English [EN]
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Open Cascade Technology topic overview

The analysis highlights Technology, History and Companies as prominent areas in the source structure around Open Cascade Technology.

Related topics
62
Source areas
4
Connected nodes
66
Extracted relationships
52
Concept neighborhoods
13
Bridge connections
66

What this topic covers Research coverage

Source areas are shown by the number of related topics found in each part of the analysis. Use smaller areas too: they can reveal specialized angles and content gaps.

Functions · 33 topics
History · 13 topics
CAD programs based on Open Cascade Technology · 8 topics
Overview · 8 topics

Smaller areas are not necessarily less important. They contain fewer connections in this analysis and can be useful for finding specialized angles or coverage gaps.

Key facts & relationships

High-confidence facts extracted from structured source data. Use them as anchors for further research.

Developer
Open Cascade S.A.S.U.
License
LGPL 2.1 only with exception
Operating system
Linux, FreeBSD, macOS, Windows, Android, iOS, WebAssembly
Platform
IA-32, x86-64, ARM
Release
1999; 27 years ago (1999)
Repository
git.dev.opencascade.org/gitweb/?p=occt.git

Explore all related topics Closing gaps

Browse the complete topic structure, not only the most central items. Less prominent entities and concepts can reveal missing angles, specialized context and useful research gaps. Each item opens a new analysis centered on that subject.

Overview

History

Functions

CAD programs based on Open Cascade Technology

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

How Open Cascade Technology connects Entity context

The extracted context around Open Cascade Technology shows recurring relationship patterns in the source. For example, Open Cascade Technology → CAD/CAM/CAE, EDA, FEM, FORAN, FreeCAD, Gmsh, KiCad, OCCT, Python, SALOME, SENER, Several CAD, Since, V80R2 Another extracted example is Open Cascade Technology → Areva, CADE, CAS, Euriware Group, French, In, License, Matra Datavision, Open Cascade, Open Cascade SAS, Open CASCADE Technology Public, Principia. Use these groups to spot repeated connection types before inspecting the individual relationships.

Open Cascade Technology

Top relations

related to CAD programs based on Open Cascade Technology · 14
Open Cascade Technology → CAD/CAM/CAE, EDA, FEM, FORAN, FreeCAD, Gmsh, KiCad, OCCT, Python, SALOME, SENER, Several CAD, Since, V80R2
related to Open sourcing · 12
Open Cascade Technology → Areva, CADE, CAS, Euriware Group, French, In, License, Matra Datavision, Open Cascade, Open Cascade SAS, Open CASCADE Technology Public, Principia
related to Collaborative development portal · 8
Open Cascade Technology → According, Contributor License Agreement, Git, GitHub, In December, Mantis Bug Tracker, Open Cascade, Open Source Community
related to License change · 8
Open Cascade Technology → December, Fedora, GPL, LGPL-2, License, Open Cascade Technology Public, Since, Versions
Developer · 1
Open Cascade Technology → Open Cascade S.A.S.U.
License · 1
Open Cascade Technology → LGPL 2.1 only with exception
Operating system · 1
Open Cascade Technology → Linux, FreeBSD, macOS, Windows, Android, iOS, WebAssembly
Platform · 1
Open Cascade Technology → IA-32, x86-64, ARM
Release · 1
Open Cascade Technology → 1999; 27 years ago (1999)
Repository · 1
Open Cascade Technology → git.dev.opencascade.org/gitweb/?p=occt.git

Important terminology

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

open cascade version occt cad technology license open-source modeling data design software public development release 3d provides available since cas

Open Cascade Technology relationships Subject–Predicate–Object triples

TTTA extracted 52 structured relationships around Open Cascade Technology. Examples in this analysis include Open Cascade Technology → Developer → Open Cascade S.A.S.U. and Open Cascade Technology → License → LGPL 2.1 only with exception. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
Open Cascade TechnologyDeveloperOpen Cascade S.A.S.U.1.00infobox
Open Cascade TechnologyLicenseLGPL 2.1 only with exception1.00infobox
Open Cascade TechnologyOperating systemLinux, FreeBSD, macOS, Windows, Android, iOS, WebAssembly1.00infobox
Open Cascade TechnologyPlatformIA-32, x86-64, ARM1.00infobox
Open Cascade TechnologyRelease1999; 27 years ago (1999)1.00infobox
Open Cascade TechnologyRepositorygit.dev.opencascade.org/gitweb/?p=occt.git1.00infobox
Open Cascade TechnologyStable release8.0.1 / 30 July 2026; 25 days ago (30 July 2026)1.00infobox
Open Cascade TechnologyTypeCAD, CAM, CAE1.00infobox
Open Cascade TechnologyWebsitedev.opencascade.org1.00infobox
Open Cascade TechnologyWritten inC++1.00infobox
Open Cascade Technologyrelated to CAD programs based on Open Cascade TechnologySeveral CAD0.60section
Open Cascade Technologyrelated to CAD programs based on Open Cascade TechnologyFreeCAD0.60section

Related concept clusters Concept neighborhoods

The concept neighborhoods around Open Cascade Technology bring nearby vocabulary together. In this analysis, examples include Open, Technology and License. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • Open Cascade Technology
    • Open
    • Technology
    • License
    • Version
    • Available
    • Software
    • Open-source
    • Cad
    • Community
    • Ifc
    • Portal
    • Sas
  • open cascade technology
    • Open
    • Technology
    • License
    • Version
    • Available
    • Software
    • Cad
    • Open-source
    • Community
    • Ifc
    • Sas
    • Cade
  • open cascade
    • Open
    • Technology
    • License
    • Version
    • Available
    • Software
    • Cad
    • Open-source
    • Community
    • Ifc
    • Sas
    • Cade
  • cad programs based on open cascade technology
    • Open
    • Technology
    • Cae
    • Cam
    • Design
    • License
    • Version
    • Available
    • Developed
    • Building
    • Cade
    • Cas
  • computer-aided design
    • Cae
    • Cam
    • Developed
    • Cad
    • Software
    • Open-source
    • Occt
    • Etc
    • Portal
    • Building
    • Classes
    • Information
  • 3d
    • Modeling
    • Cad
    • Technology
    • Cae
    • Cam
    • Etc
    • Building
    • Cade
    • Cas
    • Information
    • Library
    • Design
  • industry foundation classes
    • Building
    • Information
    • Provides
    • Data
    • Modeling
    • Etc
    • Ifc
    • Libraries
    • Portal
    • Source
    • Wok
    • Design
  • gnu lesser general public license
    • Technology
    • Public
    • Released
    • Community
    • Open
    • Source
    • Version
    • Development
    • Software
    • Open-source
    • Ifc
    • Libraries

Connections between topic areas Semantic bridges

For Open Cascade Technology, one of the stronger structural bridges in this analysis connects Open Cascade Technology with Functions. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.

Min side: 3
Open Cascade Technology — Functions · splits 33 ⟂ 34
Open Cascade Technology — History · splits 53 ⟂ 14
Open Cascade Technology — Overview · splits 58 ⟂ 9
Open Cascade Technology — CAD programs based on Open Cascade Technology · splits 58 ⟂ 9

Map overview Semantic statistics

Open Cascade Technology

Nodes67
Edges66
Triples52
Avg. degree1.97
Density0.029851
Components1

Source & methodology

TTTA analyzes the structure around Open Cascade Technology to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as Technology, History & Companies, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — Open Cascade Technology · EN edition · Analysis: TopicsToTalkAbout

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