If you are interested in contributing, QCAD is hosted on github and all kind of contributions are welcome (development, documentation, translations, etc.). For extensions in C/C++, a plugin interface is available as well. Since almost the entire Qt and QCAD API are available to scripts, there are no limits when it comes to extending QCAD through scripts. QCAD can be easily extended through its very powerful and complete ECMAScript (JavaScript) interface.

All proceeds are reinvested into the future development of QCAD. QCAD Professional can be purchased for a small license fee. Additional power-user tools including DWG support and enhanced DXF support are available as QCAD Professional through proprietary add-ons. It offers a complete set of general purpose CAD tools and uses the DXF format as its native file format. NET for Compact Framework is a small API for AutoCAD DWG manipulation and DXF file formats in C. QCAD 3.1 is an easy to use, complete 2D CAD system for Windows, Mac OS X and Linux. Free Version Limitations Trial text Homepage Developed by CADSoftTools. QCAD 3.1 adds various improvements and new features to QCAD but probably the most important news today is that starting with QCAD version 3.1, QCAD is now available under the GPLv3 (open source software) as a free download to anyone.

QCAD version 3.1 has been released today!

Progecad free download full version