Responsive Nav is a tiny JavaScript plugin which helps you to create a toggled navigation for small screens. It uses touch events and CSS3 transitions

SlidesJS is a responsive slideshow plug-in for jQuery with features like touch, CSS3 transitions, looping, auto play, fade or slide transition effects

jQuery.pin is great for pinned navigations and anything you want to stick. It pins any element within a container. Easily disable it

Conveyor-Belt is a simple but well adjustable slideshow carousel jQuery plugin. There are plenty of configurations available

Highlight Search Terms is a jQuery plugin which highlights search terms in referrer URL from Google, Yahoo, Bing

JResponsive is a simple jQuery plugin that allows you to add a dynamically-resized layout to any page or element, customize the layout

Pronto is a jQuery plugin for faster page loads.   Building on concepts like 

FormHelp is a jQuery utility plugin providing contextual help on input fields in a form. FormHelp provides contextual help

MapQuery is a jQuery plugin that you can use to add mapping to your website. Whether you quickly want to add a simple map to a page, or build a feature

gmaps.js allows you to use the potential of Google Maps in a simple way.