LeakCheck - Data breach search engine, low price starting from $10/mo, one email address for free, unlimited API, 7B+ entries
Sucuri Security Scanner - Sucuri Security Scanner is a web-based tool that is used to protect the website from intruders and hackers.
Spybot Identity Monitor - Get an overview where your account was leaked.
Identity Leak Checker - Identity Leak Checker is the online platform that tells you about the data leaks and the account breach of any website.
have i been pwned? - Check if your account has been compromised in a data breach
Avast Hack Check - Avast Hack Check is a web-based platform that provides you the features to protect the password of your accounts and informs you about the intruders.