QCad – computer aided drafting software

QCad is an application for 2D computer aided drafting.

QCad enables users to create technical drawings such as plans for buildings, interiors, mechanical parts or schemas and diagrams.

It uses DXF as its standard file format. While other CAD packages are often complicated to use, QCad tries to be different.

Features include:

  • Layer and Block support.
  • 35 CAD fonts included which are extendable through .cxf files.
  • 24 line widths, 19 line styles, undo/redo.
  • Multi-document interface.
  • Unlimited undo / redo.
  • Over 40 construction tools.
  • Over 20 modification tools.
  • Construction and modification of points, lines, arcs, circles, ellipses, splines, polylines, texts, dimensions, hatches, fills, raster images.
  • Various powerful entity selection tools.
  • Metric and imperial units:
    • Metrical: Nanometer, Millimeter, Centimeter, Decimeter, Meter, …
    • Imperial: Inch, Foot, Mile, Microinch, Mil, Yard.
    • Other: Angstrom, Micron, Astro, Lightyear, Parsec.
  • Support for DXF R12 and DXF 200x, BMP, JPEG, PNG.
  • Part library (over 4,800 CAD parts including mechanical, electrical and processing symbols all in DXF format).
  • ECMA Scripting interface:
    • Creation and modification of entities.
    • Create new, interactive CAD tools to integrate into QCAD.
    • Create command line or GUI tools based on QCAD technology.
    • Script shell.
    • Almost the entire Qt API is available including:
      • SQL database connectivity.
      • networking.
      • WebKit.
      • Multimedia.
      • XML.
      • user interface (Widgets).
  • User interface translations to a large number of languages including Chinese, Dutch, French, German, Greek, Italian, Russian, Turkish and Welsh.

Support: Documentation
Developer: Andrew Mustun, Knute Linhaard, Juha Nieminen, Petri Damstén, Hanzy von Morgus
License: GNU General Public License v3.0

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QCad is written in C++. Learn C++ with our recommended free books and free tutorials.

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