Open Source LDraw Alternatives

The most popular alternative is LeoCAD, which is both free and Open Source. If that doesn't suit you, our users have ranked 13 alternatives to LDraw so hopefully you can find a suitable replacement. Other interesting LDraw alternatives are Konstruktor (Free, Open Source) and Bricksmith (Free, Open Source).

The list of alternatives was last updated on Nov 4, 2019

  • LeoCAD is a CAD program for creating virtual LEGO models. It has an easy to use interface and currently includes over 6000 different pieces created by the LDraw community.
  • Konstruktor provides a 3D environment on your screen in which you build Lego models out of predefined bricks and other subunits.


    The official website is no longer available. Last version, 0.9.0-beta1, released in January 2011, and the sourcecode are still available on Github.

    • Free • Open Source
    • Mac
    • Windows
    • Linux

  • Bricksmith allows you to create virtual instructions for your Lego creations on your Mac.
    • Free • Open Source
    • Mac