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The BRL-CAD package is a powerful Constructive Solid Geometry (CSG) solid modeling system with over 20 years development and production use by the U.S. military. BRL-CAD includes an interactive geometry editor, parallel ray-tracing support for rendering and geometric analysis, path-tracing for realistic image synthesis, network distributed framebuffer support, image-processing and signal-processing tools. The entire package is distributed in source code form.

New Website Under Development

The BRL-CAD website has been undergoing a complete redesign and we are about ready to publicly announce and deploy the new site. Your help in testing the site is requested. Please visit the new design *here* and let us know what you think, particularly if you run into any display or navigation issues. Thank you!




  1. Overview of BRL-CAD
  2. Introduction to MGED ( PDF)
  3. Principles of Effective Modeling ( PDF )
  4. Converting Geometry Between BRL-CAD and other Formats ( PDF )
  5. Developing applications
  6. Building from the sourceforge SVN repository
  7. Code documentation formatted courtesy of doxygen
  8. Some ARL Technical Reports
  9. Users group presentations


Purchasing support or training.
See SURVICE Engineering, Inc. for information about BRL-CAD support, training, and other services.

IRC Channel: #brlcad on
For those new to IRC, see one of the following: