Checking for Leaked Passwords:

Visit exposed.lol to uncover leaked passwords associated with your email. Please note that service reliability may vary.

Use breachdirectory.org to look for SHA1 password hashes connected to your email or username. For decryption help, visit md5decrypt.net/en/Sha1/.

Check out search.0t.rocks to find out which emails are linked to a specific password.
Decoding Hashed Passwords:
Websites:

Explore crackstation.net for decoding different types of hashes.

hashes.com offers a platform for hash decryption services.

For MD5 hash decryption, visit cmd5.org.

Decrypt MD5 hashes by visiting md5decrypt.net.

For comprehensive functionalities, onlinehashcrack.com provides paid decryption services.
Command-Line Tools (CLI):

Available tools include
HashCat and
Search That Hash on GitHub.