Microsoft helps developers testing web apps

Even though Microsoft itself would prefer to change this, many users still rely on older versions of Internet Explorer. For developers, this means spending hours on testing their web apps to ensure they work on IE8 and IE7, for example. Microsoft, which has worked hard on making IE9 and IE10 compatible with standards like HTML5 and CSS3, is fully aware of this problem and today launched modern.IE to "make it easier for developers to ensure their sites work beautifully across Internet Explorer as well as other modern browsers.".