This blog provides three main integrations with Fiddler’s Desktop application, and one with Fiddler’s Core API.
BuiltWithFiddler adds BuildWith functionality to the HTTP Debugging Proxy Fiddler. It helps to determine the underlying technologies used in HTTP responses.
Improved HTML inspection for Fiddler.
Adds an automatic “IsItDownForEveryone” helper when Fiddler is running and detects a DNS or other connection failure to detect whether the website is available to other people.
Allows applications running in Windows Azure to log directly to Azure Storage, preventing the need from running the Fiddler UI in the cloud and thus negating the need to remote desktop onto instances.