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QCAD Community Edition is free and open source under GPLv3. The commercial Professional edition adds DWG support and further tools for a one-off fee.

• Over forty construction and twenty modification tools with layers and blocks
• DXF input and output, printing to scale and across multiple pages
• Thirty-five CAD fonts plus TrueType, metric and imperial units
• An interface people consistently describe as easy to pick up without CAD experience

• Reads DXF and DWG, writes DXF, DWG, PDF and SVG
• Doubles as a command line converter for batch jobs
• Interface translated into over thirty languages
• Windows, macOS universal and Linux AppImage builds, including ARM64

• 2D only; there is no 3D modelling at all
• DWG support and some tools are in the paid Professional edition
• Not aimed at parametric or constraint-driven design
• Community and Professional builds differing in features can be confusing at first

• Two dimensional only; there is no 3D modelling at all
• Interface conventions come from QCAD and feel dated
• Releases are infrequent compared with commercial CAD packages

• qcad.org

• github.com/LibreCAD/LibreCAD