[jgrowl]

This is what I've used for quite a while. It's not the fanciest, but it is simple and easy to use.

For backup, I use duplicity to encrypt my .password-store and all other private files. I have it spit the output to my dropbox folder so it syncs automatically.

This keeps what sites I have passwords for hidden from the outside world.

I've looked a little into keeping the entire .password-store folder encrypted locally until I try to use it, but I guess I'm not paranoid enough for the hassle.