IE Add-Ins
Inline CSS Editor
ieHTTPHeaders (orig)
http://www.blunck.info/iehttpheaders.html
FullSource and ieHttpHeaders
http://weblogs.asp.net/jgalloway/archive/2003/12/03/41140.aspx
Command Prompt Explorer Bar
http://weblogs.asp.net/yvesdolc/archive/2004/04/02/106795.aspx
PrivBar -- An IE/Explorer toolbar to show current privilege level
http://weblogs.asp.net/Aaron_Margosis/archive/2004/07/24/195350.aspx
Autocode for VS properteis etc.