Fiddler (software)

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Fiddler logo.png
Screenshot of Fiddler monitoring communication between a local computer and Wikipedia
Screenshot of Fiddler monitoring communication between a local computer and Wikipedia
Original author(s)Eric Lawrence[1]
Initial release6 October 2003; 15 years ago (2003-10-06)[2]
Stable release
5.0.20182 / 28 June 2018; 4 months ago (2018-06-28)[3]
Operating systemWindows XP and later, macOS (Beta), Linux (Beta)[4]
Platform.NET Framework 4.x[4]
Size1 MB
TypePacket analyzer[5]

Fiddler is an HTTP debugging proxy server application originally written by Eric Lawrence, formerly a program manager on the Internet Explorer development team at Microsoft.[1]


Fiddler captures HTTP and HTTPS traffic and logs it for the user to review (the latter by implementing man-in-the-middle interception using self-signed certificates).[6]


On 6 October 2003, Eric Lawrence released the first official version of Fiddler.[2]

On 12 September 2012, Fiddler was acquired by Telerik and he joined the company to work on Fiddler on a full-time basis.[7]

On 23 December 2015, Lawrence left Telerik for Google's Chrome security team.[8] Telerik continued to develop Fiddler. In June 2018, Lawrence returned to Microsoft as Principal Program Manager.[citation needed]

See also[edit]


  1. ^ a b Lawrence, Eric (2005-06-06). "HTTP Performance". IEBlog. MSDN (Microsoft corporation).
  2. ^ a b "Fiddler HTTP Debugger - Version Info". Retrieved 2012-08-17.
  3. ^ a b "Fiddler Editor's Review". FindMySoft. 28 June 2018.
  4. ^ a b "Fiddler Web Debugger - Get Fiddler". Retrieved 2016-01-04.
  5. ^ "Fiddler Web Debugger - Fiddler". Retrieved 2010-08-20.
  6. ^ Lawrence, Eric (January 2005). "Fiddler PowerToy - Part 1: HTTP Debugging". MSDN (Microsoft corporation). Archived from the original on 2016-08-09. Retrieved 2007-01-15.
  7. ^ Lawrence, Eric (September 2012). "Fiddler Telerik". Fiddler. Archived from the original on 12 September 2012.
  8. ^ Lawrence, Eric (December 2015). "My Next Adventure". Retrieved 2016-02-06.

Further reading[edit]

  • Lawrence, Eric (15 June 2012). Debugging with Fiddler: The complete reference from the creator of the Fiddler Web Debugger. ISBN 978-1475024487.

External links[edit]