FreeCAD - An open-source parametric 3D modeler
SolidWorks - Dassault Systรจmes SolidWorks Corp. develops and markets 3D CAD design software, analysis software, and product data management software. SolidWorks is the leading supplier of 3D CAD product design engineering software.
Netfabb - Innovative software solutions for 3D printing and additive manufacturing.
3D Cityplanner - 3D Cityplanner for smarter spatial design
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
3DPrinterOS - 3DPrinterOS is a comprehensive solution that makes it easy to manage files, machine, and users around your business.