Kanary - Find exposed personal information & delete it.
Sheetson - Instantly turn any Google Sheet into RESTful API
Justdeleteme.xyz - Justdeleteme.xyz is a directory of direct links that redirects you to the account deletion page of the web services.
Stein - Use Google Sheets as your no-setup database
pCloud Pass - Check if your personal information has been exposed
Sheety - Turn any Google sheet into an API instantly, for free. Power websites, apps, or whatever you like, all from a spreadsheet. Changes to your spreadsheet update your API in realtime. Neat