Appcelerator is an open source platform for building rich web applications. Appcelerator’s flagship product is called the Appcelerator Platform. The Appcelerator Platform consists of an SDK for building rich web applications and is completely open source. Recently, they have released Appcelerator Titanium, an open source platform for building desktop and mobile applications using a common set of Web technologies.

Appcelerator Titanium allows developers to use standard Web technologies such as HTML, CSS and JavaScript to quickly and easily develop applications that can be deployed to multiple platforms, including the desktop, the browser or the mobile device.

Unlike traditional Web applications, which are limited to operating within the browser, Titanium desktop applications are able to read and write local data on the desktop and interact with the operating system. In particular, Titanium enables developers to build desktop Web applications that can operate both online and offline. You can also run your apps on Windows, Mac and Linux. Titanium is licensed under the Apache Public License.

Requirements: -
Demo: http://appcelerator.org/
License: Apache Public License