pageAccelerator is a very light solution to load web pages faster. It's an agnostic library that uses ajax and pushState to deliver a faster navigation experience.
pjax is a jQuery plugin that uses ajax and pushState to deliver a fast browsing experience with real permalinks, page titles, and a working back button
Pegasus is a simple JavaScript solution to improve your average time to display data. Using this technique, you can reduce the time to display data in single page apps without touching the server.
It works in all major browsers and IE7+
Pronto is a simple way to harness the speed increases that HTML5's pushState() can provide on nearly any site imaginable. Using a "partial page load" technique, Pronto reduces the over all server load and font-end render time by only updating pieces of a page instead of the entire document.
