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KeyCreator is a non-parametric, non-history based, "direct" 2D/3D solid modeling CAD program. Originally known as CADKEY, [2] it was first released in 1984, running on DOS, UNIX and Microsoft Windows operating systems.
AutoCAD is a 2D and 3D computer-aided design (CAD) software application developed by Autodesk. [1] It was first released in December 1982 for the CP/M and IBM PC platforms as a desktop app running on microcomputers with internal graphics controllers. [2]
AutoCAD opens documents with DWG compatibility as a "DWG file format version code" where the specific version code can be found by opening the .dwg file in Windows Notepad or any text editor program. The file contents starts with this string. The file format version code (tag) is dependent on the AutoCAD version. [2]
Title License 3D rendering support Actively developed 3D-Coat: Commercial software: Yes: Yes 3D Slash: Freemium: Yes: No 3dvia Shape: Commercial software: No: Yes AC3D: Commercial software
At the end of the trial period, BricsCAD reverts to a free-of-cost 3D solid modeler, called BricsCAD Shape. At any time, a trial version (or an installation of BricsCAD Shape) can be converted to a full commercial license with the entry of a valid license key. The license key determines the user's Edition.
There are potential weaknesses in the implementation of the protocol between the dongle and the copy-controlled software. For example, a simple implementation might define a function to check for the dongle's presence, returning "true" or "false" accordingly, but the dongle requirement can be easily circumvented by modifying the software to always answer "true".