noesis is described as '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' and is an app. There are more than 10 alternatives to noesis for a variety of platforms, including Windows, Linux, Mac, Online / Web-based and Android. The best alternative is MeshLab, which is both free and Open Source. Other great apps like noesis are GLC_Player, View3dscene, open3mod and HRConvert2.
noesis is mainly a 3D Modeler but alternatives to it may also be CAD Softwares or Image Converters. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of noesis.
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.
CtrlView is a fast, compact, powerful viewer/converter for different 2D/3D raster/vector file formats with the format recognition system. It means that CtrlView analyses content of the file and determines its format.