) in the entry dialog, in the database settings dialog and in the options dialog.
You can have a look at its full source and check whether the encryption algorithms are implemented correctly. KeePass is really free, and more than that: it is open source (OSI certified). The databases are encrypted using the best and most secure encryption algorithms currently known (AES and Twofish).
So you only have to remember one single master password or select the key file to unlock the whole database. You can put all your passwords in one database, which is locked with one master key or a key file. KeePass is a free open source password manager, which helps you to manage your passwords in a secure way.