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.

Website: qcad.org
Support: Documentation
Developer: Andrew Mustun, Knute Linhaard, Juha Nieminen, Petri Damstén, Hanzy von Morgus
License: GNU GPL v3


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

Return to Graphics Home Page | Return to CAD Home Page

Popular series
Linux for StartersNew to Linux? Read our Linux for Starters series.
Free and Open Source SoftwareThe largest compilation of the best free and open source software in the universe. Supplied with our legendary ratings charts.
Linux ReviewsHundreds of in-depth reviews offering our unbiased and expert opinion on software.
Alternatives to GoogleAlternatives to Google's Products and Services examines your options to migrate from the Google ecosystem with open source Linux alternatives.
MicrosoftAlternatives to Microsoft's Products and Services recommends open source Linux software.
AdobeAlternatives to Adobe Cloud is a new series looking at free and open source alternatives to products available from Adobe Cloud's subscription service.
Linux System ToolsEssential Linux system tools looks at small, indispensable utilities, useful for system administrators as well as regular users.
Linux ProductivityLinux utilities to maximise your productivity. Small, indispensable tools, useful for anyone running a Linux machine.
Home Computer EmulatorsHome computers became commonplace in the 1980s. Emulate home computers including the Commodore 64, Amiga, Atari ST, ZX81, Amstrad CPC, and ZX Spectrum.
Now and ThenNow and Then examines how promising open source software fared over the years.
Linux at HomeLinux at Home looks at a range of home activities where Linux can play its part, making the most of our time at home, keeping active and engaged.
Linux CandyLinux Candy opens up to the lighter side of Linux. Have some fun!
Best Free Android AppsBest Free Android Apps. There's a strict eligibility criteria for inclusion in this series
Programming BooksThese best free books accelerate your learning of every programming language
Programming TutorialsThese free tutorials offer the perfect tonic to the free programming books series
Stars and StripesStars and Stripes is an occasional series looking at the impact of Linux in the USA
Share this article

Share your Thoughts

This site uses Akismet to reduce spam. Learn how your comment data is processed.