Internet Explorer

Internet Explorer, at the time of writing, still has a wide install base; it's also the least favorite browser among developers. Virtually every developer has experienced serious issues when optimizing a webpage for IE; this is due to the fact that IE diverges from web standards in significant areas, but things are changing and the preview of IE 10 is getting good scores in various tests. Internet Explorer 11 is even better for developers.

Developer Tools were introduced in Internet Explorer 8, and updated with new functionality in Internet Explorer 9. Developer Tools in Internet Explorer 10 add Web Worker debugging and support for multiple script sources.

You can access Developer Tools by pressing F12 or by navigating to Tools | Developer Tools from the menu bar:

The IE 10 Developer Tools provide a similar user interface to the Developer Tools in Safari, Chrome, and Firefox.