I am looking for a tool/add-on like Firebug on Firefox ( that is immensely useful for debugging web applications) which works for Internet Explorer. Any suggestions ?
-thanks
Microsoft provides the IE Developer Toolbar which provides similar functionality to Firebug.
You can also use Firebug Lite in IE6+.
Check this Firebug Lite For IE. Also there is DebugBar, IE developer toolbar are few other names.
Also wanted to mention, for network analysis, similar to Firebug's Net tab, I don't think IE dev tools offers as good an alternative. You can then use Fiddler/Fiddler 2 and it's related plugins.
And another option for that that I like is ieHttpHeaders. It won't give you HTTP response body/data but it gives you the HTTP request headers + HTTP POST parameters (excluding file uploads, binary data, and multi-part form POSTs), and HTTP response headers. Good tool to have as companion to your other IE tools.
Go to Settings and select F12 Developer Tools in IE. I use IE10 and it works.
You can also press F12.
The usage is similar to Firebug. I like this interface more, it shows the color of all color-hex values for easy reference.
来源：https://stackoverflow.com/questions/4395135/firebug-equivalent-for-internet-explorer