Fiddler (software)

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search

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; 16 years ago (2003-10-06)[2]
Stable release
5.0.20194 / 3 October 2019; 4 months ago (2019-10-03)[3]
Operating systemWindows XP and later, macOS (Beta), Linux (Beta)[4]
Platform.NET Framework 4.x[4]
Size3 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 logging is performed by implementing man-in-the-middle interception using self-signed certificates.[7]


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

On 12 September 2012, Fiddler was acquired by Telerik and the original author joined the company to work on Fiddler on a full-time basis.[8]

On 22 December 2015, Eric Lawrence announced[9] he was leaving Telerik and the Fiddler project.

See also[edit]


  1. ^ a b Lawrence, Eric (6 June 2005). "HTTP Performance". IEBlog. MSDN (Microsoft).
  2. ^ a b "Fiddler v1.x Release History". Telerik. Retrieved 7 October 2019.
  3. ^ "Fiddler Release History". Telerik. 3 October 2019.
  4. ^ a b "Fiddler Web Debugger - Get Fiddler". Retrieved 18 September 2019.
  5. ^ "Fiddler Web Debugger - Fiddler". Retrieved 20 August 2010.
  6. ^ "Progress Telerik Fiddler Web Debugger and Progress Telerik Fiddler License Agreement". Telerik. 20 September 2018.
  7. ^ Lawrence, Eric (January 2005). "Fiddler PowerToy - Part 1: HTTP Debugging". MSDN (Microsoft corporation). Retrieved 7 October 2019.
  8. ^ Lawrence, Eric (September 2012). "Fiddler Telerik". Fiddler. Archived from the original on 12 September 2012.
  9. ^ Lawrence, Eric (December 2015). "Fiddler - A Segue". Telerik.

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]