FreeCAD - An open-source parametric 3D modeler
Synthesio - Synthesio is a social intelligence tool or a marketing software that is specially made for the purpose of social media monitoring and social analytics.
SketchUp - 3D for Everyone
Swift Social - All-in-One Social Media Growth and Management Tool
LibreCAD - An open source 2D CAD application for Windows, Apple and Linux.
TitanMLM - TitanMLM is a modern multi-level marketing management software that allows businesses to manage their operations from a single platform.