FreeCAD - An open-source parametric 3D modeler
EyeSpy360 - EyeSpy360 is a world’s most leading self-service 360 virtual tour software platform that allows you to create a high-quality tour in a few minutes.
LibreCAD - An open source 2D CAD application for Windows, Apple and Linux.
Concept3D - Concept3D is a cloud-based software solution that helps businesses create and manage 3D maps and virtual and experiences in order to enhance engagement with visitors and clients.
SketchUp - 3D for Everyone
Immoviewer - Immoviewer is a software solution that combines Automated Real-Estate Video Content creation with simple and scalable 3D 360 tours.