EyeOS is an open source cloud computing platform with services that includes an office suite, groupware applications, and the toolkit to develop specific web applications.

EyeOS framework lets its users create applications that runs on a Web Desktop & EyeOS 2.0 is the perfect development framework for quick and easy creation of rich Internet applications (RIA).

The Symbian Foundation has announced to Open Source the popular Symbian Mobile Platform. Any individual or organization can now take, use and modify the code for any purpose, whether that be for a mobile device or for something else entirely

ReactOS is a free and open-source operating system based on the Windows NT architecture design, providing support for existing applications and drivers and an alternative to the current dominant consumer and server operating systems.

Pizabi is one of the most powerful open-source social networking platform on the planet. With literally thousands of websites powered by PHPizabi including everything from simple friends sites to the most complex networking super sites out there. Easy to install, use, and raising the bar on what it is to provide a reliable, fast, social networking package to raise your business to the next level.

PHPizabi has been built from the ground up to be scalable, adaptive, and modular, in order to easily wrap around the application(s) it will cover. With your users needs in mind, we have brought you an application that will bring your website, and your business, to the next level.

ActionScript Application Framework (ASAP) is an open source Flash ActionScript 2.0 Rich Internet Application library for the development of maintainable, multi-movie, event based interactive applications.

ActionScript Application Framework (ASAP) provides practical, reusable, pattern-based solutions for common challenges in Flash applications.

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Box2D is an open source physics engine written primarily for games. As the name suggests, Box2D is a purely 2D engine. However, Box2D has grown beyond it’s humble box simulating roots, and can now handle convex polygons and other shapes.

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Website: http://www.box2d.org

Download Code: http://sourceforge.net/projects/box2d

Appcelerator is a fully-integrated platform for building Rich Internet Applications (RIAs). It provides everything you need to build a rich and highly interactive web site or application.

Appcelerator is powered by several powerful capabilities:

• Message Oriented Architecture
• Web Expression Language
• Widget Framework
• Integrated Services Platform

The 960 Grid System is an effort to streamline web development workflow by providing commonly used dimensions, based on a width of 960 pixels. There are two variants: 12 and 16 columns, which can be used separately or in tandem.

The premise of the system is ideally suited to rapid prototyping, but it would work equally well when integrated into a production environment. There are printable sketch sheets, design layouts, and a CSS file that have identical measurements.

Facebook Connect is the next evolution of Facebook Platform – enabling you to integrate the power of Facebook Platform into your own site. Enable your users to seamlessly “connect” their Facebook account and information with your site. Find their friends who also use your site. And also, share information and actions on your site with their friends on Facebook.

Pligg is an open source Content Management System (CMS) available to download for free. Pligg has perfected content management in a unique way that encourages users to participate and control the content on the site.

Some of its features are:

• Article Rating
• Support for Multiple Languages
• Live Ajax Newsfeed
• SEO Enhanced
• URL Blocklist

Add additional functionality to your Pligg site without having to alter the Pligg code. There is already a large library of modules to choose from that will greatly enhance your Pligg site.

Some notable modules are:

• Multiple Captcha Systems
• Akismet Anti-Spam
• Google Adsense Revenue Sharing
• Newsletter Management
• Image Upload

Website: http://www.pligg.com

Demo: http://www.pligg.com/demo01/

Download: http://forums.pligg.com/current-version/