Username Anarchy
Username generator for penetration testing and user enumeration
...These generated username lists can then be used for activities such as username enumeration, password spraying, or brute force testing during security audits. Username Anarchy supports numerous formatting styles, allowing security testers to replicate patterns commonly used in enterprise environments such as first.last, flast, or firstinitiallastname. Username Anarchy can also utilize name sources gathered from OSINT techniques such as social networks or other public data to produce realistic username lists.