Open Cascade Technology
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OpenCASCADE Screenshot
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| Developer(s) | Open Cascade S.A.S |
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| Initial release | 1999 |
| Stable release |
7.1.0 / November 25, 2016
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| Repository | git |
| Written in | C++ |
| Operating system | Windows, Linux, FreeBSD, Mac OS X, Android, and iOS |
| Type | CAD, CAM, CAE |
| License | LGPL 2.1 |
| Website |
www dev |
Open Cascade Technology (OCCT), formerly called CAS.CADE, is an open source software development platform for 3D CAD, CAM, CAE, etc. that is developed and supported by Open Cascade SAS.
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 to Dassault Systèmes, developer of competing CATIA.
In 1999 Matra Datavision decided to publish its CAS.CADE infrastructure under an open source model under the Open CASCADE Technology Public License and renamed it Open Cascade.
In 2000, a separate company, Open Cascade SAS, was created to make business around Open Cascade. 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. 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.
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 called Open Cascade Community Edition. The project aims to establish a separate community-based release and bug-report process for the library.
In December 2011, Open Cascade installed a web portal for external contributors and made its bugtracker and further Git repository publicly available. 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, etc.
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