Rondell is a jQuery plugin for displaying galeries and other content the way you want.  

HTML5 validates forms without additional JavaScript. Currently only latest versiones of Firefox, Safari & Google Chrome supports this functionality. This

Joyride is an easy to configure jQuery site tour wizard. It is extremely flexible and lets you take control

Website Backgrounds contains all kinds of background designs, including Colorful, Abstract, Grunge, Nature and textures.  

jQuery Upvote is a plugin that generates a voting widget like the one used on Stack Exchange sites.  

TimeCircles is a jQuery plugin that provides a nice looking way to either count down towards a certain time, or to count up from

SlickMap CSS is a simple stylesheet for displaying finished site maps directly from HTML unordered list navigation. It’s suitable for most

jBreadCrumb is a collapsible breadcrumb, which was developed to deal with deeply nested, verbosely

GitHub & BitBucket HTML Preview provides HTML preview for GitHub repositories. It allows you to render those files

Tipsy is a jQuery plugin for creating a Facebook-like tooltips effect based on an anchor tag's title attribute.