Open CASCADE 6.5 can be downloaded from our website for free. This free program is a product of Open Cascade SA. The most popular version of the tool is 6.5. The program relates to Photo & Graphics Tools. Our antivirus scan shows that this download is clean.
From the developer:
Industrial Open Source alternative to proprietary 3D modeling kernels.
You may want to check out more software, such as OCCT Documentation, DWG Open File Tool or AI Open File Tool, which might be related to Open CASCADE.