Have I Been Pwned? will inform you if one of your accounts was compromised. They've cataloged over 4.9 Billion hacked accounts.
A Chrome extension that speeds up registrations to unimportant websites. Using a random identity generator and a form filler, Reggy helps bypass registration forms to any website. Please only use this for sites you don't want to give your real details to, in order to avoid spam.
Texno is a web app to detect and anonymize any kind of text using machine learning. You can edit and save all your texts for free.