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QCAD is a free, open source application for computer aided drafting (CAD) in two dimensions (2D). With QCAD you can create technical drawings such as plans for buildings, interiors, mechanical parts or schematics and diagrams. QCAD works on Windows, Mac OS X and Linux. The source code of QCAD is released under the GPL version 3 (GPLv3), a popular Open Source license.

The LibreCAD team is an open source community made up of developers from all over the world, dedicated to the development and maintenance of LibreCAD software. The team was founded in 2010 by Ries van Twisk and released software under the GNU General Public License. Members of the LibreCAD team come from different countries and regions, including the United States, the Netherlands, Italy, China, Russia, etc., and they have made significant contributions in software development, testing, document writing and other fields. The team updates software versions regularly, adds new features and fixes bugs to ensure users can get a better user experience. At the same time, the LibreCAD team also provides rich documents and guides to facilitate users to use and learn the LibreCAD software.

LibreCAD is a free and open source Computer-Aided Design (CAD) software that helps users create 2D technical graphics and designs. It features cross-platform compatibility, open source code, ease of use and great flexibility.

LibreCAD supports multiple file formats, including DXF, DWG, SVG and PDF, and can be well integrated with other CAD software. It provides users with a variety of tools and functions, such as basic graphic drawing tools like points, lines, circles, arcs, polygons, and rectangles, as well as advanced editing features like offset, stretch, rotation, symmetry, and array, which enable users to create designs easily without any relevant experience.

LibreCAD offers a Chinese interface, which makes it more convenient for Chinese users to use. Meanwhile, its open source nature allows users to develop and extend it according to their own specific needs, making creation even simpler.

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