For mature software, Vim. For new software, I'd say 1Password. It's amazing how well it syncs with everything, across Firefox and Chrome, and how it handles n

For mature software, Vim. For new software, I'd say 1Password. It's amazing how well it syncs with everything, across Firefox and Chrome, and how it handles not just usernames and passwords but gives a secure way to share secret plain text files, scan QR codes and more.