Fiddler
Fiddler is a debugging program for websites. The software is a part of Telerik, a suite of software that specializes in development of tools that help other users build products, such as software, user interfaces or websites. The software is owned and developed by Progress, and other products by the company include Kendo UI, Telerik Reporting, Test Studio, JustAssembly, JustDecompile, JustMock, Sitefinity, DevCraft and more. Progress has offices in the Unites States, the United Kingdom, India, Bulgaria and Australia. Progress started in 1981 as the Data Language Corporation, renaming to Progress Software Corporation in 1987. They went public on NASDAQ as Progress in 1991.
- Web Session Manipulation: A user can edit web sessions with a simple breakpoint, pausing session processing to allow alteration
- HTTP requests can be composed and run directly through Fiddler
- Performance Testing: View the total page weight, compression and HTTP caching to see where a site might be slowing down
- Performance bottlenecks can be easily isolated by flagging any uncompressed responses larger than a certain amount
- Powerful built-in scripting (FiddlerScript) allows easy extension of Fiddler's capabilities.
- Other extensions can be developed using any .
- NET language for more powerful addons
- Comprehensive security testing allows Fiddler to decrypt HTTPS traffic, displaying all requests for either all traffic or just specific sessions
- According to the Fiddler website, the software works on any internet browser and on any operating system or platform
- The software is completely free to download and use, but paid enterprise support is available
- The paid Enterprise Priority Support package for Fiddler is an incredible $999 per user, and that only covers a year of support with a 24-hour response time. Compared to the free price of the base software, that's an enormous difference and the package isn't even all that good
Debugging is a huge part of website and software development, as bugs are practically a natural occurrence in projects of any size. Fiddler is a free, high quality proxy solution for debugging that's loaded with features. The most recent release of the software is available for Windows (XP or above) with beta version available for Apple Mac OS X and Linux desktop operating systems. Installing the latest version of the software requires .NET framework version 4, 8 megabytes of disk storage space, a processor capable of at least 1 gigahertz of processing power and 2 gigabytes of RAM. Some of the tools available with Fiddler include FiddlerCore, which is used for modifying and view traffic for .NET applications; and FiddlerCap, which is used for web traffic log capturing.