It’s a relative unknown tool, but Fiddler can be a lifesaver if you are a web developer. From the website:

Fiddler is a HTTP Debugging Proxy which logs all HTTP traffic between your computer and the Internet. Fiddler allows you to inspect all HTTP Traffic, set breakpoints, and “fiddle” with incoming or outgoing data. Fiddler is designed to be much simpler than using NetMon or Achilles, and includes a simple but powerful JScript.NET event-based scripting subsystem.

Fiddler has been created by Eric Lawrence of Microsoft, and the Help, About box also shows a copyright message from Microsoft, however the site itself doesn’t really look much like an official Microsoft site.

Free download at: http://www.fiddlertool.com

The site also lists a number of other useful goodies:

http://www.fiddlertool.com/Fiddler/essentials.asp

Technorati Tags: , ,