FreeCAD
This program is designed for use mainly in the products design and mechanical engineering departments, but it is also widely used in architecture and other engineering fields and specialties. This open source 3D-Solid design software makes use of Coin 3D, Python and other open source libraries like Open Cascade.Features – The program allows for modeling features like primitive creations, Boolean operations and offset. You can make use of the command line version with footprints of low memory as server and there are workbenches and macro recording to make your work easier.
The program can be run as Python module and it contains built-in scripting.
QCad
This is a professional cad application meant for 2d computer aided design and drafting. With this software designers can create amazing technical drawings like diagrams, mechanical parts, interiors and building plans. QCad stands out among the list of CAD software because of its ease of use and less complications. This is partly due to the fact that the program uses DXF as its standard file format. The program is available in two versions, including the professional version that comes at a very low cost and the community edition that is completely free.Features – The program can be used for the modification and construction of ellipses, splines, polylines, arcs, circles, raster images texts and dimensions. It provides block and layer support, multi-document interface as well as ECMA scripting interface – which is not available in the free community edition.
The user interface translates to a number of international languages including German, Chinese, Italian, Dutch, Welsh, Russian, Turkish, French and Greek.
BRL-CAD
This is a very powerful package that is used for constructive solid geometry modeling in the military, medical, architecture and the automobile industry. The package consists of animation capabilities, numerical processing and ray-tracing libraries, performance analysis benchmark tools, embedded scripting interface, signal-processing and image tools and solid geometry editor with interactive 3d.Features – The image processing tools in the program supports ordinary formats like SUN, PS, PNG, RLE and PPM. The signal processing utilities makes use of raw data streams with respect to certain criteria and the network package library makes connections with multiplexes by the implementation of client-server network.
Also, the geometry modeling kernel delivers geometric processing and ray-trace analysis through a high performance C API.
Open CASCADE
This software is used for rapid application development and data exchange, 3d solid and surface modeling and visualization. This is made possible by its C++ components, which also allows for the development of simulation software.Features – The modeling data is available in form of 2d and 3d geometric modeling and the foundation classes provides for services like strings and other quantities, manipulation aggregates of data in classes and primitive types. Data exchange capabilities allows for cascade applications that are open to make data exchange with other applications, using interfaces like STEP AP214 IGES AP203. Open cascade makes available a number of ready-to-use algorithms that makes it possible for graphic presentations to be created from geometric models; this is to ensure for effective data structure visualization.
Brendan Garrett is a CAD Technician who makes the most of the free 3D models that he finds in software such as FreeCAD.
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