LibreCAD - An open source 2D CAD application for Windows, Apple and Linux.
Udemy - Online Courses - Learn Anything, On Your Schedule
FreeCAD - An open-source parametric 3D modeler
Adobe Learning Manager - Adobe Learning Manager (formerly Adobe Captivate Prime LMS) is easy to setup and helps in delivering engaging learning experiences in a personalized manner across devices.
SketchUp - 3D for Everyone
Moodle - Moodle is the world's most popular learning management system. Start creating your online learning site in minutes!