insight3d is described as 'Let’s you create 3D models from photos. You give it a series of photos of a real scene, it automatically matches them and then calculates positions in space from which each photo has been taken along with a cool 3D pointcloud of the scene' and is an app. There are more than 10 alternatives to insight3d for a variety of platforms, including Windows, Linux, Mac, Web-based and Android apps. The best insight3d alternative is Meshroom, which is both free and Open Source. Other great apps like insight3d are Agisoft Metashape, Regard3D, Scaniverse and WebODM.