The Voronoi Web Site - Christopher Gold's Computational Geometry Links

HULL - Ken ClarkSon's convex hulls, Delaunay triangulations, alpha shapes calculator in C

Magic Software - Dave Eberley's Code Page: Includes lot of Code that you might need while writing a Computational Geometric Software

Polygon Boolean operations on sets of polygons - GDSII viewer + Algorithms for 2d polygon boolean operations, C++ source code

Computational Geometry Code - Jeff Erickson's links to freely available implementations of geometric algorithms and software.

Fast Industrial-Strength Triangulation - By Martin Held (Polygons with holes and degeneracies/self-intersections accepted)

QMG project - Mesh generation in 2D and 3D on Unix and NT, and related software by Steven Vavasis.

Amenta's Directory of Computational Geometry Software - Lot of categories and links.

CGAL - Computational Geometry Algorithms Library - The CGAL project is a collaborative effort to develop a robust, easy to use, and efficient C++ software library of geometric data structures and algorithms.

Polyhedral FAQ - Frequently Asked Questions in Polyhedral Computation.

Delaunay Triangulation Code - J-D. Boissonnat et al.'s code for Delaunay meshing in 2 and 3 dimensions in C++.

Fast Robust Predicates for Computational Geometry - C code for orientation and incircle tests using adaptive-precision floating-point arithmetic

Stony Brook Algorithm Repository - Section on Computational Geometry - Summary of major CG problems and implementations of their solutions

Polymake - A tool for the algorithmic treatment of polytopes and polyhedra.

JeoEdit - Two Java applets for editing polygons and point sets for input to computational geometry software.

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.

Knotenpunkt - Produces commercial software that creates a surface model out of a pointcloud or polymesh [German Company]

Reviver Homepage - A Free Surface Reconstructor which turns unorganised point clouds to surfaces. Variety of Output Formats. (Surface Reconstruction Software)

GTS - The GNU Triangulated Surface Library - 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.

Edgebreaker 3D Compression for Triangle Meshes - Source code, explanations, file formats, and examples of the Edgebreaker compression and decompression techniques.

Enclosing Ball Code - Computes the smallest enclosing ball of a set of points or a set of balls, in arbitrary dimension. Based on a randomized incremental algorithm using the move-to-front heuristic.

Knotplot - A program for exploring topological knots and knot-like objects in a 3-D rendered environment offering stills, animated knots (including dynamic forces) and demos. Aimed at mathematician and artist alike.

XYZ GeoBench - Macintosh program for interactive, experimental, and educational geometric computing, including animation of many algorithms in computational geometry.