Virtual Tours Creator - Virtual Tours Creator is a 360-degree virtual tours creator software that takes the hassle of manually creating virtual tours and replacing them with an automated way.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Panoee - Start free to build high-quanlity & smart 360° Virtual Tour in minutes with beautiful themes & unlimited customization.
FreeCAD - An open-source parametric 3D modeler
iGUIDE - iGUIDE is an interactive 3D virtual tour platform that can help you to create and publish interactive 360°, or 180°, or any other size of the tours with the photos or videos on your website.
MATLAB - A high-level language and interactive environment for numerical computation, visualization, and programming