Graphics

A Linux, Windows & OSX vector graphics editor (SVG format) featuring transparency, gradients, node editing, pattern fills, PNG export, and more.

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Developer: inkscape.org
License: GNU General Public License (GPL)
Operating System: 32-bit MS Windows (NT/2000/XP), All POSIX (Linux/BSD/UNIX-like OSes), Linux, OS X

MakeHuman(C) is a stand-alone, multi-platform, GPL software program.

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Developer: makehuman.org
License: GNU General Public License (GPL)
Operating System: OS Portable (Source code to work with many OS platforms)

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.

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Developer: brlcad
License: BSD License
Operating System: 32-bit MS Windows (NT/2000/XP), All BSD Platforms (FreeBSD/NetBSD/OpenBSD/Apple Mac OS X), All POSIX (Linux/BSD/UNIX-like OSes), FreeBSD, Linux, OS X, Solaris, Win2K, WinXP, SGI IRIX

A graphics program which allows to model and render 3D objects and scenes.

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Developer: behemot
License: BSD License
Operating System: 32-bit MS Windows (95/98), All 32-bit MS Windows (95/98/NT/2000/XP), All POSIX (Linux/BSD/UNIX-like OSes), Apple Mac OS Classic

Ayam is a free 3D modelling environment for the RenderMan interface.

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Developer: ayam3d.org
License: BSD License
Operating System: All 32-bit MS Windows (95/98/NT/2000/XP), All POSIX (Linux/BSD/UNIX-like OSes), FreeBSD, Linux, OS X, SGI IRIX