Open CASCADE Technology
Open CASCADE Technology (OCCT) is a software development platform for 3D CAD, CAM, CAE, etc. that is developed and supported by OPEN CASCADE SAS. It is available under the "Open CASCADE Technology Public License" which the developer claims to be "LGPL-like with certain differences". Despite this claim, it is not listed as compatible with the GPL license by the publisher of the LGPL, the Free Software Foundation. The Debian project considers the license to meet the Debian Free Software Guidelines and has accepted Open CASCADE into its main archive after some debate .
In March 2011, the wording of the license was subtly changed. From then on, contributors are no more inclined but now advised to send their modifications of the source code back to Open CASCADE S.A.S.
Read more about Open CASCADE Technology: History, Object Libraries, Workshop Organization Kit (WOK), Releases, Open CASCADE Community Edition, Collaborative Development Portal
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which stands continually open to our gaze, but it cannot be understood unless one first learns to comprehend the language and interpret the characters in which it is written. It is written in the language of mathematics, and its characters are triangles, circles, and other geometrical figures, without which it is humanly impossible to understand a single word of it.”
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