IETester & DebugBar & Companion

     IETester is a free WebBrowser that allows you to have the rendering and javascript engines of IE8 RC1, IE7 IE 6 and IE5.5 on Vista and XP, as well as the installed IE in the same process. 
     IETester是一个免费的浏览器控件，可以让您在 Vista 和 XP通过IE8 RC1, IE7 IE 6 和 IE5.5渲染Javascript引擎，他可以很好的加载IE在同一个进程中。

下载地址：http://www.my-debugbar.com/wiki/