ieHTTPHeaders [via Serdar Kilic] This is a really really cool tool. Off late We've been doing stuff which always required looking at the HTTP headers and we employed a number of ways to do that. ieHTTPHeaders leave everybody behind.
ieHTTPHeaders is an explorer bar for Internet Explorer that will show you the HTTP Headers IE are sending and receiving.
Best part is that it is employed as an explorer bar in IE and second it color codes request and response headers. While there do check out the other tools. All very useful especially COMTrace.