QCAD is released under the GNU General Public License. Precompiled packages are available for 32-bit and 64-bit GNU/Linux platforms, MS Windows OS and OS X.
Some of the interface and concepts behind QCAD are similar to those of AutoCAD.
QCAD uses the AutoCAD DXF file format internally and to save and import files. AutoCAD DWG support is available as a commercial plugin.
QCAD operates on Linux, Mac OS X [10.8 (Mountain Lion), 10.7 (Lion), 10.6 (Snow Leopard)], UNIX (FreeBSD), Solaris for x86 and SPARC, and Windows [8, 7, Vista, 2000]. This is of importance for collaboration across a diverse computing environment.