KeychainRecovery is a free tool to recover the lost password of a .keychain file of a Mac operating system. Most of the applications store the Login passwords and critical information to prevent hassale of entering the password everytime by the user. Often these applications use their own proprietary encryption mechanism to store the credentials. But on Mac many applications use the keychain files for storing the username, passwords and sometime even other critical data. Most often the users of Mac forget the master password of these keychain files, especially the "login.keychain". KeychainRecovery helps these users to retrieve the lost master password of the keychain file.