Free alternative to Autocad and other commercial softwares: Alternative gratuites

"BRL-CAD is a powerful cross-platform open source solid modeling system that includes interactive geometry editing, high-performance ray-tracing for rendering and geometric analysis, image and signal-processing tools, a system performance analysis benchmark suite, libraries for robust geometric representation, with more than 20 years of active development."

	Find open source software alternatives to well-known commercial software. Find alternatives for iTunes -> Amarok or Banshee Or check-out Photoshop, Autocad, Visio, Dreamweaver or Norton Ghost on your own.

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