Fiddler is a debugging proxy that monitors all web requests between your computer and a remote server and allows to inspect and modify them.

Fiddler can be extended with scripts written in JScript.NET (it's very easy to write them), change the program menu, and in general it is a wonderful tool. You can use it with any browser. In the new version of Fiddler, some features may change, some may be introduced.

When you enter Fiddler, a query window opens on the left and work tabs on the right.

As you can see, there are many options, they barely fit in the image. And, believe me, there are even more opportunities.

Capabilities & Operations on requests in Fiddler
In the requests window on the left, you can view and select requests, view their headers, save them to disk all together or separately.

If you need to generate a bulk amount of passwords you can use one of the widely available websites, use a console generator program, or if you don't trust anyone, you can quickly write your own program. Below is the source code of a True Random password generator written entirely in C#. Compared to similar programs available on the net, which use clock-dependent C# System.Random Number Generator, this code sample uses RNGCryptoServiceProvider which is far more secure and provides unique numbers over a long period of time. Even if you won't notice the difference in generating 1-2 passwords, the RNGCryptoServiceProvider will have more even distribution for thousands of iterations.

Getting cell text in OpenXML SDK 2.5 is quite tricky because the cell text can be either stored in the cell itself, or in a shared string table. In the latter case, the cell value is just an index to the shared string table. Also, some files have data stored in CellValue, other files have data in the InnerText fields. To address all these variations, I wrote the tiny function to get the cell text in any case: