http://clipperz.com http://clipperz.com rocks in terms of usability, convenience, and a sense of security (which might be false: here is a call for criticism).

http://clipperz.com http://clipperz.com rocks in terms of usability, convenience, and a sense of security (which might be false: here is a call for criticism). It is open source, portable (runs in Javascript), works on and offline and well designed. You can log in using a master passphrase, or a one-time password.