LivePipe provides a collection of open-source scripts built to facilitate development.
Yepnope.js is an asynchronous conditional resource loader that helps you use feature detection for loading exactly the scripts you need.
jQAPI is an open-source site which provides local and alternative jQuery documentation tool.
FitText.js is a tool which allows you to automatically scale text (well, headlines) in your website.
Bookmarklet Generator allows you to create your own “requires-jQuery-to-run” bookmarklet.
Microjs is a directory of such tiny ( Visit Site
Respond.js is a fast & lightweight polyfill for min/max-width CSS3 Media Queries (for IE 6-8, and more).