Sar Dar 14 Jul, 2018 03:11 AM QCAD - 2D draftinghttps://www.qcad.org/en/ File support:Import / Export: DXF, DWG Pros: Can do Metric or Imperial Over 40 construction tools Over 20 modification tools Part library with over 4800 CAD parts Cons: Runs on: Windows Linux Mac