insight3dng is described as 'Fork of insight3d.
It lets you create 3D models from photos. From a series of photos, it automatically matches them and then calculates positions in space from which each photo has been taken along with a 3D pointcloud of the scene' and is a 3D Modeler in the photos & graphics category. There are more than 10 alternatives to insight3dng for a variety of platforms, including Windows, Linux, Mac, Web-based and Android apps. The best insight3dng alternative is Meshroom, which is both free and Open Source. Other great apps like insight3dng are Agisoft Metashape, Regard3D, Scaniverse and RealityCapture.
It isn't a 3d application.