Usernamer is a penetration testing tool to generate a list of possible usernames/logins (ex: John Doe Doeson) for user enumeration or bruteforcing. This tool also supports text-files with one name per line as input.
You can download it from the following link: https://packetstormsecurity.com/files/download/116998/jseidl-usernamer-9e6f56a.zip
Source: https://packetstormsecurity.com/files/116998/Usernamer-Login-Information-Generator.html