jshashes
A fast and independent hashing library pure JavaScript implemented (ES3 compliant) for both server and client side (MD5, SHA1, SHA256, SHA512, RIPEMD, HMAC and Base64)
historyjs
History.js gracefully supports the HTML5 History/State APIs (pushState, replaceState, onPopState) in all browsers. Including continued support for data, titles, replaceState. Supports jQuery, MooTools and Prototype. For HTML5 browsers this means that you
html5-history-api
HTML5 History API expansion for browsers not supporting pushState, replaceState