Here are some excerpts from an article i came across that would be useful to get to know Adobe AIR.
AIR stands for, the Adobe Integrated Runtime (AIR) and is one of the latest interesting development from Adobe.
AIR runs on Windows, Mac OS X and a very usable Beta version for Linux. It installs the first time you download and run an AIR application, much in the same way that Flash is installed on a computer if the user visits a web site using Flash and they don’t already have it installed.
AIR applications run on the desktop and are half way between web based applications (which run in a browser) and full blown desktop applications such as Word or Photoshop.
AIR applications differ from current web applications because AIR applications do not run in your web browser and therefore are able to use desktop features such as full drag and drop between applications, save files to the local hard drive or network and store data locally in a database.
When compared to traditional desktop applications, AIR applications are simple to deploy, easy and cost-effective to build, have better web integration and will run on all three of the major operating systems.
AIR is also smart enought to know when it is and isn’t connected so you can create programmes that work with online data and use the local database as a fallback if the connection to the internet is dropped.
more on AIR at Adobe® AIR™ Applications Wiki
Download the latest version of Adobe AIR
RefreshingApps.com – Showcase for Adobe AIR Applications and Resources