With the variety of different devices available to surf the web, it isn’t enough to have a website that you can view easily from your desktop. Websites not only need to render perfectly in different browsers but also on desktop PCs, tablets and mobile devices.

Screenfly an incredibly simple application, just type in a web address and you’re off and running. It is a free web app that lets you view a website on different screen resolutions; it supports Samsung Galaxy Tab, Apple iPad 1 & 2 and Motorola Xoom tablets among others and Apple iPhone 3 & 4, Google Nexus S, LG Optimus S among other mobile screen resolutions. It also supports different size desktop screens and different TV resolutions.

How it works
When you type in a web address and hit “Go,” Screenfly builds an < iframe> and displays it on the screen. The frame contains the web document you specified, and once it has loaded, testing can ensue. To change between screen resolutions, click on the icon for the relevant device type and pick your model (if listed) or choose which device has the closest in screen resolution. The site automatically detects if the URL you’ve entered has a mobile site and redirects you to it. You can turn device detection switching off by checking the No proxy server box when you enter the URL.