The KeePass password management database (KDB) file is a free, open-source, lightweight, and easy-to-use password manager. KDB files are the database files which are associated with the program. A KeePass is a free open source password manager, which helps to manage your passwords in a secure way. Save all your passwords in one database, which is locked with a one master key or a key file so that it is easy to remember one single master password alone or select the key file to unlock the full database. The databases are encrypted using the best and most secure encryption algorithms currently known (AES and Twofish).