CGAL / cgal

The public CGAL repository, see the README below

morishuz / delaunay32

Fast, parallel 2D Delaunay triangulation using exact integer predicates

artem-ogre / CDT

Constrained Delaunay Triangulation (C++)

hhoppe / Mesh-processing-library

C++ libraries and programs demonstrating mesh processing research published in ACM SIGGRAPH (1992-2003)

MeshInspector / MeshLib

3D geometry processing SDK: fast mesh boolean, mesh repair, decimation, remeshing, offset, point cloud triangulation and ICP registration. C++ with Python, C#, C and JavaScript bindings.

boostorg / geometry

Boost.Geometry - Generic Geometry Library | Requires C++14 since Boost 1.75