Install Big Tech Detective for Firefox or Chrome
Big Tech Detective is a browser extension to help you track tech giants while you surf the web. BTD works by checking the IP address of every request made by your browser against a database of IP addresses owned by Google, Facebook, Microsoft, and Amazon. The database lives at an API hosted on Digital Ocean, the code and documentation for which exists here.
BTD was made by Alden Rivendale Jones, Dhruv Mehrotra, and Emily Lin together with the Anti-Monopoly Fund at the Economic Security Project.