Shadow is based on Weinre (Web Inspector Remote) open source software. In itself, Weinre takes some skill to use, however, Shadow places a front end on it that masks most of its complexity so that designers need not have coding knowledge.
Once installed, users can see layout changes and other development updates across devices immediately and simultaneously. Adobe has tested some 20 devices at the same time, and says that an unlimited number can be viewed. "This is a real time savings, because the way people are doing this job today, they have to go directly to the device, load a long URL, and type on the tiny keyboard. And they have to do that for every device," said Bowman. "Then they make a change and have to refresh each browser, so that they're constantly refreshing browsers all day, and that gets old and tedious. With Shadow, we take care of that chore for you."
The final shipping product is expected to be released in the second half of 2012 in the Adobe store. It's also available in the iTunes Store and the Android Market. While there will be a charge for the desktop commercial version, the price has not been revealed. Shadow will also be available for subscription as part of Adobe's new Creative Cloud, due to launch within the first half of this year.
Adobe has posted more information about Shadow on its website and wants to hear from users about their experiences with the product before the commercial release.