Fiddler monitors HTTP/ HTTPs traffic coming from or to all apps that make use of a proxy like IE, Safari, Firefox, Chrome, Opera and others. As a free web debugging proxy, it logs all HTTP(s) traffic between the internet and the PC. Mobile devices are also supported. While compatible with frameworks like .NET, Ruby and Java, this monitoring tool makes sure all cookies, headers, and cache directives are being transferred between the server and the client.
Web sessions are easy to manage, as setting a break point is all you need to interrupt the process and permit alteration of the request/ response.
Web sites can be decrypted and tested for total page weight, compression and cache. Scripts and extensions are expected to improve the functionality of this monitoring tool.