When you’re developing web-applications an windows-based systems, there are certain tools you just need! Especially when developing for Internet-Explorer there are a couple of tools that Firefox users already know, but are not that common to IE users.

1. IEDevtoolbar – this gives you all the infos about the currently displayed web-page you ever wanted to know. Instead of looking at the HTML source code you can view a structured tree-like representation of the DOM. Especially useful is the feature to display the computed css-style for an elemente …
2. Fiddler 2 – fiddler acts as a proxy to allow to “monitor” all traffic going from and to the IE. This can help to diagnostic potential problems when accessing web-applications.