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

Appcelerator also provides a number of other capabilities, including:

• Localization Framework
• Client-side Validation Framework
• Form-specific features
• Several common JS utilities (e.g., Date formatting, Cookie manipulation)
• Tools for client-side debugging
• Flexible programming models (declarative or Javascript)
• Built-in support for popular server-side programming languages

Organizations from around the world have developed applications on the Appcelerator Platform. Please see some of the case studies that profile these organizations and their experience with Appcelerator.
Website: http://appcelerator.org/

Try Appcelerator: http://try.appcelerator.org/

Applications Developed with Appcelerator: http://appcelerator.org/demos