Chocolatey - The sane way to manage software on Windows.
Camelcamelcamel - Easily monitor Amazon product prices and get alerts when they drop.
Scoop - A command-line installer for Windows
PriceSpy - PriceSpy helps you save money when shopping online.
Ninite - Ninite is the easiest way to install software.
Savelist - Found products you want but not ready to buy?