IETester debugbar

IETester,很强大，感谢饭团，感谢summer
IETester is a free WebBrowser that allows you to have the rendering and javascript engines of IE8 beta 2, IE7 IE 6 and IE5.5 on Vista and XP, as well as the installed IE in the same process.
由于工作，电脑需安装N多N版浏览器。可是在Vista Ultimate迟迟没有装成IE6版。

还有这个强大的网站：http://www.my-debugbar.com/

听说是SEoer的常用工具之一

http://www.seotest.cn/seotools/