Adobe® AIR™, formerly code-named Apollo, is a cross-operating system runtime that allows developers use their existing web development skills in HTML, AJAX, Flash and Flex to build and deploy rich Internet applications to the desktop. Once installed Adobe AIR Applications complement browser-based web applications by providing additional reach and capabilities.

The Adobe® AIR™ runtime lets developers use proven web technologies to build rich Internet applications that deploy to the desktop and run across operating systems. Adobe AIR offers an exciting new way to engage customers with innovative, branded desktop applications, without requiring changes to existing technology, people, or processes.
With the Adobe® AIR™ runtime, you can deliver branded rich Internet applications (RIAs) on the desktop that give you a closer connection to your customer.