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QCad Portable
Free
QCAD: Powerful 2D CAD for Technical Drawings
Windows
QCad
Trial version
Create technical drawings such as plans for buildings, interiors, or mechanical parts.
Mac
Qcad for Linux
Free
Get a multi-platform 2D CAD system and the flagship product.
Linux
QCad
Free
QCAD: Robust 2D CAD for Technical Drawings
Windows