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3DLDF 'GNU 3DLDF' is a 3D graphics package with MetaPost output. It is written in C++ using CWEB and includes documentation. The current stable release of GNU 3DLDF, 1.1.5.1, doesn't include an input routine, so user code must be written in C++, compiled, and linked with the rest of the program. However, the current development versions, collectively numbered 1.2.0.0 and available here, implement an interpreter for a Metafont-like language, so that GNU 3DLDF can be used interactively. Please see the GNU 3DLDF homepage, for more information.

Aqsis Aqsis is a Renderman(tm) compliant 3D rendering toolkit. It is based on the Reyes rendering approach. Features include programmable shading, true displacements, NURBS, CSG, Motion Blur, and direct rendering of subdivision surfaces.

ArtofIllusion Art of Illusion can be used as a 3D Modeller and can be used to create movies. It can currently import and export Alias .obj files and export VRML97 files (without animation). To create movies, Art of Illusion has a offline renderer and set of tools to create animations. Highlights include subdivision surface based modelling tools, skeleton based animation, and a graphical language for designing procedural textures and materials.

Ayam Ayam is a free 3D modelling environment for the RenderMan interface. Ayam features at a glance:

• RIB (RenderMan Interface Bytestream) export and import.
• Support for NURB curves and (trimmed) NURB surfaces, Boxes, Quadrics (Sphere, Disk, Cylinder, Cone, Hyperboloid, Paraboloid, and Torus), CSG, MetaBalls, Polygonal and Subdivision Meshes.
• NURBS modelling includes normal and interpolating curves as well as extrude, revolve, sweep, skin, gordon, and birail objects with caps, holes, and bevels.
• Custom objects that may freely implement their representations (using OpenGL and RIB) and even small GUIs to edit their type specific parameters may be written by the user and dynamically loaded at runtime.
• Scripting interface: Tcl.
• Miscellaneous: instancing, arbitrary number of modeling views, object clipboard, independent property clipboard, console, n-level undo.

Blender Blender is an integrated 3d suite for modelling, animation, rendering, post-production, interactive creation and playback (games). Blender has its own particular user interface, which is implemented entirely in OpenGL and designed with speed in mind. Python bindings are available for scripting; import/export features for popular file formats like 3D Studio and Wavefront Obj are implemented as scripts by the community. Stills, animations, models for games or other third party engines and interactive content in the form of a standalone binary and/or a web plug-in are common products of Blender use.

CGAL The goal of the CGAL Project is to provide easy access to efficient and reliable geometric algorithms in the form of a C++ library. CGAL is used in various areas needing geometric computation, such as: computer graphics, scientific visualization, computer aided design and modeling, geographic information systems, molecular biology, medical imaging, robotics and motion planning, mesh generation, numerical methods...
CGAL offers data structures and algorithms like triangulations (2D constrained triangulations and Delaunay triangulations in 2D and 3D), Voronoi diagrams (for 2D and 3D points, 2D additively weighted Voronoi diagrams, and segment Voronoi diagrams), Boolean operations on polygons and polyhedra, arrangements of curves and their applications (2D and 3D envelopes, Minkowski sums) mesh generation (2D Delaunay mesh generation and 3D surface mesh generation, skin surfaces), geometry processing (surface mesh simplification, subdivision and parameterization, as well as estimation of local differential properties, and approximation of ridges and umbilics), alpha shapes, convex hull algorithms (in 2D, 3D and dD), operations on polygons (straight skeleton and offset polygon), search structures (kd trees for nearest neighbor search, and range and segment trees), interpolation (natural neighbor interpolation and placement of streamlines), shape analysis, fitting, and distances (smallest enclosing sphere of points or spheres, smallest enclosing ellipsoid of points, principal component analysis), and kinetic data structures. All these data structures and algorithms operate on geometric objects like points and segments, and perform geometric tests on them. These objects and predicates are regrouped in CGAL Kernels.

CGKit (Python Computer Graphics Kit) The Python Computer Graphics Kit is a collection of Python modules that contain the basic types and functions to be able to create 3D computer graphics images (focusing on Pixar's RenderMan interface).

Coin Coin is a platform-independent retained-mode 3D graphics library that uses scene-graph data structures to render real-time graphics+suitable for mostly all kinds of scientific and engineering visualization applications. It is fully compatible with Open Inventor 2.1. Coin is built on the OpenGL immediate-mode rendering library, adds abstractions for higher-level primitives, provides 3D interactivity, increases programmer convenience and productivity, and contains optimization features for fast +rendering that are transparent for the application programmer.

Compiz Compiz is the result of the re-unification of the Beryl-project and the community around the Compiz Window Manager. It seeks to provide an easy and fun-to-use windowing environment, allowing use of the graphics hardware to provide impressive effects, amazing speed and unrivalled usefulness. The first Compiz Fusion developer release was Compiz Fusion 0.5.2 on August 13th 2007.

Compiz Plugins- Extra This is the Extra plugin package for Compiz.