MeshLab is described as 'System for processing and editing 3D triangular meshes, provides a set of tools for editing, cleaning, healing, inspecting, rendering, texturing and converting meshes' and is an app in the Photos & Graphics category. There are more than 10 alternatives to MeshLab for a variety of platforms, including Windows, Mac, Linux, Online / Web-based and Android. The best alternative is OpenSCAD, which is both free and Open Source. Other great apps like MeshLab are CloudCompare (Free, Open Source), noesis (Free), OpenFlipper (Free, Open Source) and View3dscene (Free, Open Source).
CloudCompare is a 3D point cloud (and triangular mesh) processing software. It has been originally designed to perform comparison between 3D points clouds only. It relies on a specific octree structure that enables great performances(1) relatively to this particular function.
Noesis is a tool for previewing and converting between hundreds of model, image, and animation formats. It utilizes a robust plugin system, with support for native extension modules and Python scripts.
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noesis vs MeshLab opinions
pros, cons and recent comments
ichimitch The only program I've found that supports all three file extentions I use (fbx, obj, vox)
view3dscene is a VRML / X3D browser, also a viewer for other 3D models. Supported formats are X3D, VRML (1.0 and 2.0 (aka VRML 97)), Collada, 3DS, MD3, Wavefront OBJ scenes. Can do collision detection. Can be used as command-line converter from Collada, 3DS, OBJ, MD3 to VRML/X3D.
3D Object Converter, a powerful 3d polygon model translation and interactive viewing shareware tool that allows arbitrary 3d model data to be imported from external sources, exported to various industry standard 3d file formats with great accuracy and quality.