KeePass is a free/open-source password manager or safe which helps you to manage your passwords in a secure way. You can put all your passwords in one database, which is locked with one master key or a key-disk. So you only have to remember one single master password or insert the key-disk to unlock the whole database. The databases are encrypted using the best and most secure encryption algorithms currently known (AES and Twofish).

Here are the "selling points" of KeePass.
Highly encrypted databases
Support of master passwords and key-disks
Runs on all Windows operating systems and doesn't need to be installed
Export password list to TXT, HTML, XML or CSV files
Import from CSV, CodeWallet(Pro) TXT and Password Safe v2 TXT files
Easy database transfer
Support of password groups
Time fields and entry attachment support
Auto-type, global auto-type hot key combination and drag-n-drop support
Intuitive and secure Windows clipboard handling
Searching and sorting
Multi-language support
Strong random password generator
Low memory requirement
Plugin architecture
Open-Source!