Skip to Content

Offline Web Applications

Adobe’s Kevin Lynch believes that computing applications will become more powerful when they take advantage of the browser and the desktop.
February 19, 2008
Kevin Lynch

Web-based computer programs, unlike their desktop counterparts, are always up to date and are instantly available, no matter where the user is or what operating system she’s running. That’s why cloud computing–so called because it involves software that resides in the “clouds” of the Internet–has caused a “tidal shift in how people are actually creating software,” says Kevin Lynch, chief software architect at Adobe Systems. (For a review of ­Nicholas Carr’s new book on cloud computing, see “The Digital Utility.”) But cloud computing has drawbacks: users give up the ability to save data to their own hard drives, to drag and drop items between applications, and to receive notifications, such as appointment reminders, when the browser window is closed.

So while many companies have rushed to send users to the clouds, Lynch and his team have been planning the return trip. With the system they’re developing, the Adobe Integrated Runtime (AIR), programmers can use Web technologies to build desktop applications that people can run online or off.

The project is rooted in Lynch’s recognition of both the bene­fits and the limitations of the move from desktop to Web. He envisioned hybrid applications that would allow users to take simultaneous advantage of the Interne­t and their own machines’ ­capa­bil­i­ties. Lynch’s team started work on the concept in 2002 and launched AIR in beta last June.

AIR is a “runtime environment,” an extra layer of software that allows the same program to run on different operating systems and hardware. (Java is another example.) With AIR, developers can use Web technologies such as HTML and Flash to write software for the desktop. Users won’t have to seek out AIR to enjoy its bene­fits; they’ll be prompted to download it along with the first AIR applications they want to use.

The Adobe team chose to base the system on HTML and Flash for several reasons, Lynch says. First, it makes it easy for desktop applications to swap content with websites: for example, information from a website can be pulled into an AIR application with its formatting intact. Second, it should simplify development, encouraging a broader range of applications. Programmers can easily rebuild existing Web applications to work on the desktop. And in the same way that Web-based applications can be built once and will then run on any device with a browser, an application built on AIR will run on any machine that has AIR installed. (Adobe currently offers versions for Windows and ­Macintosh and is developing versions for Linux and mobile devices.)

Adobe is already working with partners to demonstrate AIR’s capabilities. One example: the popular auction site eBay has released a beta AIR-based application called eBay Desktop. Designed to improve the customer’s bidding experience, the application itself retrieves and displays content about eBay auctions rather than relying on a browser. It also takes advantage of the processing power of the user’s computer to provide search tools more powerful than those on the website. For example, it can scan search results for related keywords–a process that product manager Alan Lewis says works better on the desktop because the applicatio­n can store and quickly access lots of relevant information on the user’s computer. The program also uses desktop alerts to notify users when someone bids on auctions they are following. AIR enabled the company to create a customized user interface, without constraints imposed by the browser’s design and controls.

Lynch says that AIR was a response to the Web’s evolution into a more interactive medium. The browser, he notes, was created for “the Web of pages”; while developers have stretched what can be done with it, Lynch sees the need for an interface more appropriate to the Web of software that people use today. AIR, he hopes, will be just that.

Keep Reading

Most Popular

open sourcing language models concept
open sourcing language models concept

Meta has built a massive new language AI—and it’s giving it away for free

Facebook’s parent company is inviting researchers to pore over and pick apart the flaws in its version of GPT-3

transplant surgery
transplant surgery

The gene-edited pig heart given to a dying patient was infected with a pig virus

The first transplant of a genetically-modified pig heart into a human may have ended prematurely because of a well-known—and avoidable—risk.

Muhammad bin Salman funds anti-aging research
Muhammad bin Salman funds anti-aging research

Saudi Arabia plans to spend $1 billion a year discovering treatments to slow aging

The oil kingdom fears that its population is aging at an accelerated rate and hopes to test drugs to reverse the problem. First up might be the diabetes drug metformin.

Yann LeCun
Yann LeCun

Yann LeCun has a bold new vision for the future of AI

One of the godfathers of deep learning pulls together old ideas to sketch out a fresh path for AI, but raises as many questions as he answers.

Stay connected

Illustration by Rose WongIllustration by Rose Wong

Get the latest updates from
MIT Technology Review

Discover special offers, top stories, upcoming events, and more.

Thank you for submitting your email!

Explore more newsletters

It looks like something went wrong.

We’re having trouble saving your preferences. Try refreshing this page and updating them one more time. If you continue to get this message, reach out to us at with a list of newsletters you’d like to receive.