L0phtCrack is a powerful password audit and recovery tool for Windows and Unix passwords that assist administrators to secure and recover passwords. It features password auditing and recovery solution, helps to identify security vulnerabilities, and recover Windows and Unix account passwords both standard user as well as administrator accounts. Since its development, L0phtCrack is pretty much caught the attention of IT administrators and network engineers, because with this tool they can easily test and look for security solutions of local computer, remote, disk backup, and network.