Fleeting Password Manager
http://fleetingpm.sourceforge.net/

Fleeting Password Manager is a program that generates pseudo-random
passwords from given master password, URL/ID and user name. The master
password should be common to all passwords and URL/ID should be the url
of the service (e.g. www.facebook.com) or some part of it (e.g.
facebook). Fleeting Password Manager then combines the master password,
URL/ID and the given user name and generates the corresponding login
password.