passcards aims to be a simple, cross-platform (desktop and mobile) password manager that is compatible with 1Password. Available as a browser add-on, a web app and as a command-line app.
The web-based version of passcards can be accessed here. Currently supports Firefox, Google Chrome and Safari.
Support for Internet Explorer 10 and other modern browsers is planned.
npm install -g passcards
Visit the GitHub page for passcards to report bugs, request improvements or get involved with development.