If you are looking for pre-built, high-quality wordlists to test your FTP credentials, these are the industry standards: 1. SecLists

The legacy of the 2009 hack continues to be the industry standard. It contains over 14 million plaintext passwords and is included in Kali Linux at /usr/share/wordlists/rockyou.txt.gz . An updated version, RockYou2021 , combines 82 billion unique entries from various other lists, including CrackStation and SecLists.

To improve the "quality" of your wordlist, you can use tools like John the Ripper

Many FTP servers (like ProFTPD, vsftpd, or FileZilla) come with default accounts or are set up by hardware manufacturers with "hardcoded" credentials. A high-quality list should always start with common pairs like: admin : admin anonymous : (blank or email) root : toor ftp : ftp Targeted Permutations