Cached Commons is a collection of user-contributed javascript libraries that have been cached, optimized, and hosted on Github’s fast CDN.

The main goal is to aggregate the best-of Javascript and CSS libraries for rapid prototyping. It won’t have every javascript library because there’s 1000’s of jQuery Tooltip plugins out there, but only say 3 of them are really good.

You can easily download the libraries to your local project if you’d like, or feel free to directly link to the ones here.

Touch Gallery is an open source full-screen photo gallery for touch devices that brings the look and feel of native photo viewing applications to your mobile browser.

This open source photo gallery is a jQuery plugin and was primarily written and optimized for Mobile Safari running on the iPad or iPhone 4 but it also works fine in Dektop Safari, Firefox 4, as well as in Opera and Chrome.

Touch Gallery depends on two other plugins: transform and activity-indicator and both are packaged in one Javascript file you download with touch gallery.

TableKit is a collection of easy to implement HTML table enhancements using the Prototype framework. TableKit currently implements row striping, column sorting, column resizing and cell editing using Ajax.

TableKit allows you to easily create sortable, resizable and editable HTML tables by using CSS class overloading to tell the system how to handle a table.

Polymaps is a free JavaScript mapping library for making dynamic, interactive maps in modern web browsers. It creates image and vector tiled maps using SVG.

Polymaps provides speedy display of multi-zoom datasets over maps, and supports a variety of visual presentations for tiled vector data, in addition to the usual cartography from OpenStreetMap, CloudMade, Bing, and other providers of image-based web maps.

SlideShow is an extendable, flexible, and easy to implement MooTools Slideshow Widget. Use any element, not just images; this slideshow widget can be used to create:

• Slideshows
• Image galleries
• Tabs
• News tickers

Slideshow comes with packaged transitions but is easy to extend and create your own transitions. The class is built to handle the basics of a slideshow, extend it to implement your own navigation piece and custom transitions.

Previously, Greepit shared an HTML5-CSS3 project template that contains the basic structure for a new HTML5-CSS3 projects.

HTML5 ★ Boilerplate is another awesome HTML5, CSS3 and JavaScript template that can be used as a base html5 template for your next project for a fast, robust and future-proof site.

HTML5 ★ Boilerplate is not a framework, nor does it prescribe any philosophy of development, it’s just got some tricks to get your project off the ground quickly and right-footed. Its for sure an awesome set of files that a front-end developer can use to get started on a website.

Features

• Cross-browser compatible
• Optimal caching and compression rules for grade-A performance
• Mobile browser optimizations
• Progressive enhancement graceful degradation

The Dropdown Check List jQuery widget transforms a regular select html element into a dropdown checkbox list.

It uses the existing structure of the html select elements on which it is applied to dynamically build a container with checkboxes and labels then hides the original select element. The plugin does not change in any way the existing select element, only syncronize the checked values from the new container to the original select.

Tweet! is an unobtrusive JavaScript plugin for jQuery to add twitter on your website. Its small and efficient script that will not slow down or pause your page while tweets are loading.

With Tweet!, you can:

• Customize look and feel with your own stylesheet
• Display tweets from multiple accounts!
• Display tweets from a twitter search, or from your own feed
• Display your avatar

Dplayer is an open source, easily extend-able, HTML5 video player that allows users to easily embed videos in any page, blog or site using the newest web standards. It mainly makes use of HTML, CSS and JS while featuring as less Adobe Flash as possible (just for fallback) to allow customization with a minimal effort.

This Javascript driven HTML5 Video Player falls back to Flash only whenever there is no native H.264 support available.

No browser plugin, no Flash dependencies! You can jump anywhere in the video without waiting while buffering.

Features

• Plays ogg (theora/vorbis), mp4/mov (H.264)
• Compatible with iPhone and iPad
• Standalone pure JavaScript library
• 100% skinnable using CSS
• Fallback to Flash Player
• Full window supported

ColorPicker is a free Javascript color picker that can display and let you choose the entire color palette (~16.78 mil. colors) in 6 different color modes.

This highly customizable and easy to install Javascript color picker comes in 4 different sizes with different feature levels.

Features

• Draggable Color pickers
• Skinn-able with CSS
• Accessible & Compact Design