2D CAD for Windows, Linux and Mac. 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 was designed with modularity, extensibility and portability in mind. What people notice most often about QCAD is its intuitive user interface. QCAD is an easy to use but powerful 2D CAD system for everyone. You don't need any CAD experience to get started with QCAD immediately. QCAD can be extended through a C++ plugin interface as well as through its very powerful and complete scripting interface (ECMAScript/JavaScript).

Operating system: Windows, Linux, Mac OSX
Screen library: Qt, OpenGL