Flex® is now being developed at the Apache Software Foundation so now you can participate in the project and directly contribute to the next version of the framework. Click here to go to the Apache Flex website. The content on this Open@Adobe site reflects the last Adobe release of Flex (Adobe Flex 4.6) and older versions.
The Flex SDK provides a highly productive, open source framework for building and maintaining expressive web applications that deploy consistently on all major browsers, desktops and operating systems. It provides a modern, standards-based language and programming model that supports common design patterns suitable for developers from many backgrounds. Flex applications run in the ubiquitous Adobe® Flash® Player and Adobe® AIR™.
You can use the Flex SDK to create a wide range of highly interactive, expressive applications. For example, a data visualization application built in Flex can pull data from multiple back-end sources and display it visually. Business users can drill down into the data for deeper insight and even change the data and have it automatically updated on the back end. A product configuration application can help customers navigate the process of selecting or customizing products online. And a self-service application can guide customers through an address change or help employees complete an otherwise complicated multi-step benefits enrollment.
In addition to the Open Source Flex SDK, Adobe produces the Free Adobe Flex SDK which contains everything in the Open Source Flex SDK plus useful tools for enhancing the application development experience such as the debugger Adobe Flash Player runtime and Adobe AIR. Adobe also provides a professional IDE, Adobe Flex Builder, for building Flex applications using either the Adobe Flex SDK or the Open Source Flex SDK.
Learn about the goals for the Flex SDK project
Get a quick time line of how the Flex SDK came to be where it is today
Learn how the Flex SDK project is governed
Understand the various roles related to the Flex SDK project
Find out about your rights and responsibilities having to do with the Flex SDK
Frequently Asked Questions on official Adobe Flex site
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