A simple application for multi-factor authentication, written in HTML using jQuery Mobile, jsSHA, LocalStorage and Application Cache. It implements RFC4226 (HMAC-based OTP) and has been tested to work with Google Authenticator, Dropbox, Dreamhost, Amazon, Linode, Okta and many other services.  Demo

sysend.js is small library that allow to send message between pages that are open in the same browser. They need to be in same domain. The library don't use any dependencies and use HTML5 LocalStorage API. You can send any object that can be serialized to JSON or just send empty notification.  Demo

Tested on GNU/Linux in Chromium 34, FireFox 29, Opera 12.16 (64bit)