Toolbelt

Slickrun (http://www.bayden.com/slickrun/)

AutoHotKey (http://ahkscript.org/)

Notepad++ & PCRE (Regex) & Python (https://notepad-plus-plus.org/)

MS Excel & VBA

SQL

J (http://jsoftware.com/)

Chrome and Firefox developer tools

TeamViewer (https://www.teamviewer.com/)

Greenshot (http://getgreenshot.org/)