Adobe AIR is a cross-operating system runtime that allows developers to create rich Internet applications (RIAs).

©2008 Adobe Systems

Since John Warnock and Charles Geschke formed the company in 1982, Adobe Systems has made a lot of what we see on our computers and the information we pass around possible. The Portable Document Format (PDF), for instance, is one of the most commonly used compact file standards available. Businesses use it to pass documents around easily in small file sizes, and nearly anyone who owns a desktop or laptop uses PDFs to view photos or read articles -- it's like having an unlimited photocopier on your computer. On top of this, the company is also behind several important design applications, including Adobe Illustrator, Adobe Photoshop and Adobe InDesign, products that allow developers and everyday users to easily create and manipulate everything from a single image to large presentations. Think about it -- without Photoshop, there would never be such a thing as an LOLcat to share with friends, and the world would be a sadder place.

When it comes down to it, Adobe has changed the way we handle and develop content, both on the desktop and over the Internet. So it makes sense that Adobe's next step is to make the connection between the desktop and the Internet as seamless as possible. In early 2008, Adobe offered up its 1.0 release of Adobe Adobe Integrated Runtime (AIR). The company calls it a "cross-operating system runtime that lets developers combine HTML, Ajax, Adobe Flash, and Flex technologies to deploy rich Internet applications (RIAs) on the desktop." Adobe is marketing AIR toward developers, businesses and everyday consumers alike, and the company offers the program as a free download on its Web site.

What exactly does Adobe AIR do? What's an RIA, anyway? What does it mean for people developing new applications, and what does it mean for you sitting in front of your computer?