QCAD is a free computer-aided design (CAD) software for 2D design and drafting. Developed by RibbonSoft
License: Free Personal
Autodesk AutoCAD is a professional-grade CAD software known for its comprehensive features and 3D modeling capabilities, making it suitable for complex projects. In contrast, QCAD is a more lightweight and user-friendly option, ideal for basic 2D drafting tasks and suited for users who require a cost-effective solution.