Open Source Solid Modeling CAD
BRL-CAD is a powerful cross-platform constructive solid geometry solid modeling system that includes an interactive geometry editor, ray-tracing for rendering & geometric analyses, network distributed framebuffer support, image & signal-processing tools.
BLibrestez Robotics Software Library Project
http://sourceforge.net/feeds/p/PROJECT-BLIBRESTEZ55ROBOTICS/issueupdates/basic BLIBRESTEZ55ROBOTICSPROJECT/downloads/basic http://sourceforge.net/feeds/p/PROJECT Copyright©2011-2020 BLibrestez55Ro
Scicos-HDL is a tool to design digital circuit system; it integrates the hardware circuit, algorithm and Scilab/Scicos environment as a plat for digital circuit design, simulation and Hardware Description Language generation. ZhangDong & KangCai