OCCT Documentation 6.5.1 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The actual developer of the free software is Open CASCADE S.A.S. The program belongs to Photo & Graphics Tools.
The common filenames for the program's installer are dexplore.exe or PayPen.exe etc. We cannot guarantee that the program is safe to download as it will be downloaded from the developer's website. Before launching the program, check it with any free antivirus software. The following versions: 6.5 and 6.3 are the most frequently downloaded ones by the program users.
From the developer:
Open CASCADE Technology is a powerful CAD/CAM/CAE kernel and development platform for 3D modeling applications. It consists of reusable C++ object libraries and a set of development tools that are available in Open Source.
Open CASCADE Technology is a software development platform freely available in open source. It includes components for 3D surface and solid modeling, visualization, data exchange and rapid application development.
You may want to check out more software, such as How to Sign a PDF Document, OCCT or Scanned Document Distributor, which might be similar to OCCT Documentation.
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