Makeitfrom.com - Material properties database
MatWeb - Material property database (Pending, need to review, but looks promising)
GD&T Basics - GD&T Symbols Reference Guide
Convert - Unit conversion program for Windows
AutoHotKey - Automation scripting for Windows
NotePad++ - Open source notepad editor
On Ninite.com
Greenshot - Lightweight screenshot tool
On Ninite.com
Makeitfrom.com - usefulness, ¯\_(ツ)_/¯