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CGAL - Computational Geometry Algorithms Library - http://www.cgal.org/
A collaborative effort to develop a robust, easy to use, and efficient C++ software library of geometric data structures and algorithms. |
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Triangle - http://www.cs.cmu.edu/~quake/triangle.html
Jonathan Richard Shewchuk's Two-Dimensional Quality Mesh Generator and Delaunay Triangulator. |
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Amenta's Directory of Computational Geometry Software - http://www.geom.uiuc.edu/software/cglist/
Lot of categories and links. |
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Polymake - http://www.math.tu-berlin.de/polymake/
A tool for the algorithmic treatment of polytopes and polyhedra. |
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Qhull - http://www.qhull.org/
Computes convex hulls, Delaunay triangulations, Voronoi diagrams, half-space intersections about a point, furthest-site Delaunay triangulations, and furthest-site Voronoi diagrams. It runs in 2-d, 3-d, 4-d, and higher dimensions. |
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Computational Geometry Code - http://compgeom.cs.uiuc.edu/~jeffe/compgeom/code.html
Jeff Erickson's links to freely available implementations of geometric algorithms and software. |
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Fast Robust Predicates for Computational Geometry - http://www.cs.cmu.edu/~quake/robust.html
C code for orientation and incircle tests using adaptive-precision floating-point arithmetic |
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Gmsh - http://www.geuz.org/gmsh/
Gmsh is a three-dimensional finite element mesh generator, primarily Delaunay, with built-in pre- and post-processing facilities. Gmsh is freely available for Windows and most UNIX platforms. |
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GTS - The GNU Triangulated Surface Library - http://gts.sourceforge.net/
Open-source library for manipulating 3D triangular surface meshes. Delaunay triangulations, robust geometric predicates, robust boolean set operations on surfaces, surface refinement and coarsening, level-of-detail, k-d trees, volume and curvature, strips generation. |
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Surface Evolver - http://www.susqu.edu/facstaff/b/brakke/evolver/
Free interactive program for modelling liquid surfaces shaped by various forces and constraints, e.g., minimal surfaces (bubbles). Applies gradient descent to minimize energy. Available for most platforms. |