G# is a computational geometry math library for .NET.
G# supports Delaunay and conforming Delaunay triangulations, 2d and 3d convex hulls, smallest enclosing circles and rectangles, bounding boxes and much more. It easily handles large point sets.
PLUS: Access exact and floating point arithmetic predicates!
ComputationalCAD is an easy to use, top-performing and robust computational geometry add-on for AutoCAD®. It makes Delaunay triangulations and Digital Terrain Modeling, surface reconstruction, convex hulls, container-loading tests and much more available in AutoCAD.