Alloy UI is an HTML5 CSS3 Application Framework & and a rich widgets toolkit to deliver rich web applications with enjoyable user experiences.

It comes with many ready to use components including:

• Image gallery
• Calendar
• Color picker
• Charts
• Tooltips

This HTML5 CSS3 Framework is built upon YUI3 – Yahoo!’s JavaScript / CSS library and comes with many functional demos.

FormCheck is a lightweight MooTools Cient Side Form Validation script that performs tests to validate forms before submission.

Features

• Display errors as tips or inline (before / after the field)
• Basic validation (required, alpha, digit, alphanu, length, confirm, …)
• Regex validation (phone, email, url)
• Custom function based validation

This form validation script is multi-lingual, cross browser compatible and can be easily customized with CSS.

If you’ve ever felt the need to wrap stuff around an irregularly-shaped image using CSS, you may have been somewhat disappointed to find out that it’s forced to wrap around the image’s bounding box, rather than the actual contents of the image.

jQSlickWrap is a jQuery plugin that works on HTML5 Canvas element and enables you to easily and accurately wrap your text around the content of floated images.

It implements a client-side version of the Sliced and Diced Sandbags method of wrapping text around an irregularly-shaped object. In case user’s browser doesn’t support slick text wrapping, it will gracefully fall back to simple wrapping.

Dracula Javascript library is a collection of scripts to draw and layout interactive graphs in the browser, based on JavaScript and featuring SVG support.

Currently, the JavaScript drawing framework RaphaelJS is supported along with an implementation of the force directed spring graph layout algorithm.

No Flash, no Java, no plug-ins. Just plain JavaScript and SVG.

Apple published a showcase to demonstrate Safari’s HTML5, CSS3 and Javascript capabilities. A set of nice HTML5 demos, worth checking out.

The demos show how the latest version of Apple’s Safari web browser, new Macs, and new Apple mobile devices all support the capabilities of HTML5, CSS3, and JavaScript. Not all browsers offer this support.

HTML5 demos include:

• Interactive Implementation of Web Typography
• Horizontal / Vertical Web Image Gallery
• Photo Transitions
• HTML5 Audio implementation
• 360 Product Views
• Sticky Notes
• Offline Calendar

Apple also hosted a Dev center for developers to learn how to create such effects and an excellent library of source codes that you can build, modify, and execute to explore how to accomplish specific tasks with Apple technologies.

not!fier is a jQuery plugin to create flexible and unobtrusive inline Javascript notifications. Though its a small script but very handy to notify actions like successful edit, twitter update, new comment post, etc…

Features

• Comes with predefined skins
• Customizable via CSS
• Lifespan can be specified

not!fier is easy to implement and extend-able as per your needs.

FlareVideo is an open source HTML5 Video Player, easily customizable and themeable. It comes with full screen and fall back support to Flash for non-HTML5 browsers.

Supported video formats are:

• All browsers: MP4, FLV
• Firefox: Ogg
• Safari: MP4, MOV

This HTML5 Video Player has many options including autoplay, preload, autobuffer which can be used to customize according this to your own needs.

MooTools Canvas Library (MCL) provides functionality to manage and interact with the content of a html5 canvas element.

It provides an easy to use interface for managing layers on a canvas object and enables you to use basic mouse events and provides drag n drop support for items.

This HTML5 Canvas Library is built utilizing many features of the MooTools javascript framework which is responsible for reduced filesize, great OOP and flexible events.

AeroWindow is a jQuery plugin to create beautiful Windows7 like Glossy Popup windows. The popup windows offer the usual options and full functionality similar to as we see in the Microsoft Windows.

AeroWindow is highly customizable and comes with 30 different popup window animations.

Features

• Live animated Aero Glossy look
• Minimize, Zoom, Maximize and Close buttons
• Double-click support, such as in windows
• User-infinitely scalable window size
• Cross browser compatible

UIZE is a free open source Object Oriented Javascript Framework which allows you to create effective & interactive user interfaces for your applications.

It is designed to facilitate development of JavaScript based applications for a range of computing platforms and a range of host environments.

The UIZE Object Oriented JavaScript Framework comes packed with a number of ready-to-go widgets:

• Progress bar
• Color picker
• Date picker
• Draggable and resizable window