Adobe AIR is a development platform offered by Adobe, that allows developers to use Web technologies to create Internet applications.
Adobe AIR technology allows the development of internet rich applications compatible with Windows and Mac OS X. Developers can take advantage of it for their existing knowledge on technologies like Flash or AJAX Finish to create applications that can be used from a web browser, but also directly on the desktop.
Adobe AIR framework allows the use of these applications, which can now be performed on a variety of platforms, OS desktop to mobile devices in most OS market (Android, iOS, Blackberry ...). Version 3.0 of Adobe AIR is also enriched features for developing 2D and 3D games thanks to the accelerated GPU , and to include the environment in the installation package.
Many companies, like Ebay, using Adobe AIR to create new applications that enable you to use their services on your desktop.
You will also find utility developed by AIR and connected to social networks, which will make many services.