http://blogs.msdn.com/ie/archive/2005/09/16/469686.aspx

一些功能列表：
  • explore the DOM tree and find elements on the page
  • disable IE settings, view information
  • outline elements,
  • control images
  • resize pages to common screen resolutions
  • validate against existing standards and provides pointers to W3C specs
下载地址
http://www.microsoft.com/downloads/details.aspx?FamilyID=e59c3964-672d-4511-bb3e-2d5e1db91038&displaylang=en