MeshLab is a free and open source 3D editing and processing tool for unstructured 3D triangular meshes for Linux, Windows and MAcOS. Using MeshLab you can edit, clean, heal, inspect, render and convert meshes in your system. It comes with simple UI but powerful features. It is released under GNU General Public License v3.0. It is based on C++ mesh processing library VCGlib. You can process raw data produced by 3D digitization tools/devices and for prepare models for 3D printing.