Bricksmith 3.1 for Mac was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. We recommend checking the downloaded files with any free antivirus.
The latest version of the application can be downloaded for Mac OS X 10.6.0 or later. This free Mac application was originally developed by Allen Smith. Commonly, this program's installer has the following filename: bricksmithcomplete2.5.1.zip. This application's bundle is identified as com.AllenSmith.Bricksmith. The software lies within Design & Photo Tools, more precisely 3D Modeling. The most popular versions among the program users are 3.0, 2.6 and 2.5.
From the developer:
Bricksmith allows you to create virtual models of your Lego creations and enjoy them in all three dimensions. It is an excellent tool for creating instructions of your Lego building projects.
Bricksmith offers access to thousands of parts and dozens of colors. It also provides model-making tools for creating steps and submodels for intricate creations. Best of all, you'll never run out of bricks.
You may want to check out more software for Mac, such as PinPoint, Portraiture or OpenSCAD, which might be similar to Bricksmith.