Paribus - Find out for free if online stores owe you a refund!
Windows Remix - Web-based batch software installer with zero dependencies. Recommended first visit after reinstalling Windows or buying a new laptop.
Slice Watch - Get an email when an item you've added drops in price 💸
Scoop - A command-line installer for Windows
Gruupz - Get money back on every purchase you make on Amazon.
Aiiguide - Aiiguide is a library of more than 200,000 applications that you can download and install on Windows and macOS.