KeePassQRCodeView is an open source application for securely generating and storing passwords. It is a cross-platform application that makes it easy to generate, store, and access passwords in a secure manner. The application supports the KeePass password manager, which is a popular open source password manager. With KeePassQRCodeView, you can generate secure passwords that are harder to guess and crack. It also provides features such as password generation, password storage, and two-factor authentication. With two-factor authentication, you can add an extra layer of security to your passwords by requiring a code from another device, such as a smartphone or tablet, when logging into an account. Other features include an auto-lock timer, password strength evaluation, and an encryption tool. KeePassQRCodeView is a great way to keep your passwords safe and secure.
Discontinued is not compatible with newer versions of Firefox, etc.: https://addons.mozilla.org/en-US/firefox/addon/OfflineQR/