Ozone Widget Framework is a framework which allows you to create light-weight widgets. The Ozone Widget Framework is basically a web application, which runs in your browser, which you need to deploy on your own server, providing you with an environment having the appropriate tools to create widgets.
The widgets themselves are light-weight and decentralized. They run in iFrames and include features like in-browser secure pub-sub eventing system which allows cross-domain communication between different widgets.
The Ozone Widget Framework itself has its front-end built with ExtJS and the backend uses Grails. The front-end has been tested to work in the following browsers: IE7, IE8, IE9, Firefox 3.7, and latest versions of Safari and Chrome as well.
To run the Ozone Widget Framework you will need to deploy the software using Tomcat 7 server, requiring Java 1.6+. The deployment instructions can be found on Ozone Widget Frameworks website.