BRL-CAD is a powerful open source cross-platform solid modeling system
BRL-CAD is a powerful open-source cross-platform solid modeling system that includes interactive geometry editing, high-performance ray-tracing for rendering and geometric analysis, a system performance analysis benchmark suite, geometry libraries for application developers, and more than 30 years of active development. The package is intentionally designed to be extensively cross-platform and is actively developed on and maintained for many common operating system environments including for BSD, Linux, Solaris, Mac OS X, and Windows among others. BRL-CAD is distributed in binary and source code form. BRL-CAD respects your freedom so our code is open source under OSI-approved license terms, which means you can customize it according to your needs. It also means that you will get this software Free of cost and we won't charge you ever for any update or support.