DASYLab - DASYLab is basically a data acquisition system laboratory system that offers real-time acquisition, analysis, control and the system to create the custom graphical user interface.
SketchUp - 3D for Everyone
LabVIEW - LabVIEW offers many of the functions you'd find in a traditional script-based programming language presented in a more intuitive visual interface ideal fo engineering.
LibreCAD - An open source 2D CAD application for Windows, Apple and Linux.
TestStand Test Executive - TestStand Test Executive is an industry-proven test management program that assists the engineer’s test and validates the building and deployment process making it automated and faster than before.
DraftSight - Discover Dassault Systèmes®' DRAFTSIGHT™ Professional CAD software that lets you create, edit, view and markup any kind of 2D drawing. Learn more here.