A new version of the popular debugging proxy Fiddler has been announced. The new version, dubbed Fiddler2, adds support debugging HTTPS traffic just as you would unsecured HTTP traffic. Per the FAQs, this new version effectively runs a MITM attack to do its job, while this is the most effective way of doing this, there is the downside of the browser showing an error, though you should be able to continue by ignoring these warnings.
If you develop or maintain secure web sites, this enhanced version of Fiddler will be a great help. Though this is still an alpha version, it’s based on a fairly stable code base and seems to work well. This is one to keep an eye on.