MarcoAttene

MeshFix-V2.1. Converts a raw digitized polygon mesh to a clean mesh where all the occurrences of a specific set of "defects" are corrected. Holes, self-intersections, degenerate and non-manifold elements are all replaced with valid configurations.

CDT. C++

VolumeMesher. Convex Polyhedral Meshing for Robust Solid Modeling

Indirect_Predicates. Indirect Predicates for Geometric Constructions

TMesh_Kernel. Hybrid arithmetic for geometric computation

DelOptim. C++

VolumeRemesher. Embed a set of triangles within an existing tetrahedral mesh

NFG. A standalone header-only C++ library providing useful number types for geometric computation.