# Progress Telerik Fiddler Reviews **Vendor:** Progress Software **Category:** [Other Development Software](https://www.g2.com/categories/other-development) **Average Rating:** 4.4/5.0 **Total Reviews:** 166 ## About Progress Telerik Fiddler Fiddler, backed by Progress, gives you a trusted and secure family of web debugging proxy tools and troubleshooting solutions to address your entire software engineering team's HTTP(s) debugging pain points without any sacrifice. From Fiddler Classic to Fiddler Everywhere, you can quickly get to the root cause of HTTP(S) traffic and network problems and effectively fix them. Easily. ## Progress Telerik Fiddler Pros & Cons **What users like:** - Users commend the **ease of use** of Progress Telerik Fiddler, simplifying tracking and troubleshooting traffic effortlessly. (6 reviews) - Users find Fiddler to be a **simple and easy-to-use tool** for tracking traffic and managing requests efficiently. (2 reviews) - Users value the **time-saving capabilities** of Progress Telerik Fiddler, enabling efficient network testing and management. (2 reviews) - Users value the **easy-to-use interface** of Progress Telerik Fiddler, enhancing navigation and web debugging efficiency. (2 reviews) - Users find Fiddler to be an **essential tool for network monitoring** , offering detailed insights into network traffic. (1 reviews) - Flexibility (1 reviews) - Intuitive (1 reviews) - Navigation Ease (1 reviews) - Users find the **initial setup quick and easy** , allowing for a seamless start with Progress Telerik Fiddler. (1 reviews) - Task Management (1 reviews) **What users dislike:** - Users find it **difficult to connect with mobile** due to the need for certificate installation, complicating usability. (1 reviews) - Users find the **costly licensing** required for Progress Telerik Fiddler to be a significant drawback. (1 reviews) - Users face a **lack of tools** in Fiddler, limiting critical security testing for apps with encryption in emulators. (1 reviews) - Users find the software **limited in features** , hoping for enhancements like better traffic capturing and TCP support. (1 reviews) - Users feel the **monthly pricing is too high** and believe it should be lowered for better accessibility. (1 reviews) - Slow Loading (1 reviews) - Slow Performance (1 reviews) ## Progress Telerik Fiddler Reviews ### 1. Essential Debugging Tool with Easy Setup **Rating:** 4.5/5.0 stars **Reviewed by:** Mohd. Baquir Q. | Senior Software Engineer, Small-Business (50 or fewer emp.) **Reviewed Date:** December 12, 2025 **What do you like best about Progress Telerik Fiddler?** I like how Progress Telerik Fiddler makes it possible to block multiple hosts so they don't show up in the logs viewer, which is really helpful. The global search function across headers, request body, and response body saves me a lot of time, especially when some websites have so many network calls due to ads. This is useful for testing with my Android apps as well. Just being able to filter or block the incoming requests from ad websites and clean up the data view is fantastic. If I need to search for something specific, I can easily use a search and find it because Fiddler decodes the encoded body. Plus, the initial setup of Progress Telerik Fiddler was very quick and easy. **What do you dislike about Progress Telerik Fiddler?** When I try to run it in an emulator by configuring the proxy in Android, most of the apps don't work. It has no Frida bypass or root bypass for testing my Android app, as my app has encryption, so I want to do critical security testing. **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** I use Progress Telerik Fiddler to debug, inspect, and monitor network traffic. It lets me manipulate requests and responses, block unwanted hosts, and perform global searches across data, which simplifies finding the needed information by eliminating excess noise from ads. ### 2. Great Experience **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Insurance | Mid-Market (51-1000 emp.) **Reviewed Date:** May 12, 2024 **What do you like best about Progress Telerik Fiddler?** I have been using the free version for many years. Now I'm using the paid version and I was surprised by how easy it was to use. Very useful. **What do you dislike about Progress Telerik Fiddler?** At this moment I have nothing bad to say. I think the monthly amount should be lower. **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** With Fidller I can easily analyze complex orchestrations. ### 3. Reviewing Fiddler **Rating:** 5.0/5.0 stars **Reviewed by:** Prashant K. | Security Researcher 3, Enterprise (> 1000 emp.) **Reviewed Date:** November 26, 2023 **What do you like best about Progress Telerik Fiddler?** Fiddler is very useful tool for network monitoring and capturing network traffic. Provides basic details of network traffic such as http response codes, payloads information and many more **What do you dislike about Progress Telerik Fiddler?** It is somehow limited. It can have more features like capturing flags, sync and acknowledge traffic. TCP ports **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** It helps me capture network logs and analyse network traffic for c2 connections and payloads. ### 4. Exceptional Experience with Progress Telerik Fiddler **Rating:** 3.5/5.0 stars **Reviewed by:** Muhammad U. | Angular Developer, Mid-Market (51-1000 emp.) **Reviewed Date:** November 24, 2023 **What do you like best about Progress Telerik Fiddler?** I appreciate Progress Telerik Fiddler's intuitive interface and robust web debugging capabilities, providing seamless navigation and invaluable insights into HTTP traffic for optimal application performance. **What do you dislike about Progress Telerik Fiddler?** Occasional interface lag during heavy usage can be a minor inconvenience in Progress Telerik Fiddler. **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** Progress Telerik Fiddler solves critical issues by providing in-depth insights into HTTP traffic, helping me identify and address performance bottlenecks swiftly. Its robust debugging and customization features enable efficient problem resolution, ensuring the reliability and security of my web applications, ultimately saving time and enhancing overall development quality. ### 5. Best to capture calls in the application or mobile **Rating:** 4.5/5.0 stars **Reviewed by:** Rishi A. | Senior Test Engineer, Mid-Market (51-1000 emp.) **Reviewed Date:** October 16, 2023 **What do you like best about Progress Telerik Fiddler?** This helps in our day to day life for caturing the logs and moniture and understnd the issue quickly and have lot of filter options to use it **What do you dislike about Progress Telerik Fiddler?** BIt deficu;t to connect with mobile as ist need certificate to be intslled inmobile **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** TO moniture and fine the logs and apit call fatures in application ### 6. It was good experience with the Telerik **Rating:** 4.0/5.0 stars **Reviewed by:** Usman U. | Software Engineer, Small-Business (50 or fewer emp.) **Reviewed Date:** November 23, 2023 **What do you like best about Progress Telerik Fiddler?** The way it monitors and inspects edits and logs all HTTp traffics **What do you dislike about Progress Telerik Fiddler?** As it is not free to use, we need to buy a license to use this feature **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** It help me for debug the webapplication by caputring the network traffic between the test computer and internet ### 7. Good analyzer for tracking request and responses **Rating:** 4.0/5.0 stars **Reviewed by:** Niraj O. | Software Engineer IIA, Enterprise (> 1000 emp.) **Reviewed Date:** October 22, 2023 **What do you like best about Progress Telerik Fiddler?** It is easy tool to track traffic for your domain app with all kind of request and response with time tracker and easy to manipulate data as well as traffic **What do you dislike about Progress Telerik Fiddler?** The UI should improbe with high visibility. **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** It is solving application all kind of error and capability to analyze response data with http headers and other security stuffs. ### 8. Review for Fiddler - web debugging proxy **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Computer Software | Enterprise (> 1000 emp.) **Reviewed Date:** April 18, 2018 **What do you like best about Progress Telerik Fiddler?** Fiddler shows details of conversations between server and user when requested any site. This helps monitoring the traffic and troubleshoot the problems **What do you dislike about Progress Telerik Fiddler?** Not much, though there are few limitations of fiddler **Recommendations to others considering Progress Telerik Fiddler:** Awesome tool **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** Almost every application communicates over http: websites, RESTful services and soap alisa. Whenever there is any problem that needs us to the level of network to figure out what is going on Fiddler comes handy ### 9. A must have tool in every developer's toolbelt **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Computer Software | Mid-Market (51-1000 emp.) **Reviewed Date:** September 14, 2023 **What do you like best about Progress Telerik Fiddler?** Ease of use Support for HTTPs Tool UI that's easy to use **What do you dislike about Progress Telerik Fiddler?** Nothing to complain. So far everything is working well. **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** To identify API calls and debug ### 10. Web debuger and beyond **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Information Technology and Services | Enterprise (> 1000 emp.) **Reviewed Date:** November 23, 2022 **What do you like best about Progress Telerik Fiddler?** Fiddler gives you the possibility to not only inspect requests and responses with all the details (headers, body and representing content in several formats) but also to use breakpoints and modify the entire response or add scripting to alter or inject content **What do you dislike about Progress Telerik Fiddler?** Often it requires to explicitly decode the response body by clicking on the yellow bar in the response inspector panel. It would be good to have some automatic decoding or setting to configure this behavior. **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** Fiddler acts as a proxy so you can see all the traffic from a web browser and analyze each individual request, for example to a given website on the Internet, but it also allows you to inspect network calls made by other processes in your computer. This way you can easily understand what is happening, what parameters are sent and troubleshoot issues of several kinds (performance, wrong data, etc.) ### 11. Best Proxy Server Tool I have used **Rating:** 5.0/5.0 stars **Reviewed by:** Advait P. | Software Engineer, Small-Business (50 or fewer emp.) **Reviewed Date:** June 20, 2022 **What do you like best about Progress Telerik Fiddler?** For web developers, it is one of the advanced tools with the simplest UI in the business. Easy to use. Lots of features. The main reason I turned to Fiddler Telerik was the autoresponder tool. we work on lots of projects are in different environments and very difficult to set up that environment in a local machine. The Autoresponder makes it easy to verify my changes just by using the local file on my machine when using actual servers. Other reasons for considering fiddler were: Good trial version (most of the features available to use with some limitations) A great tool to intercept the network traffic and debug the APIs. When debugging a major issue, you can save your session in fiddler and even share it with your team members if needed. **What do you dislike about Progress Telerik Fiddler?** On some complex features, documentation lacks a bit. I was able to get lots of good information on youtube from various other users but it would have been good if official documentation describes most of it. Another minor thing is a grouping of Autoresponder rules, a couple of years earlier, I was able to group rules and was able to perform one action (enable/disable/delete) for the whole group. This was very useful when using different projects or in the same project on different environments. I would love it if they bring it back. **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** Fiddler made it easy for us to work on different projects set up in different environments. Fiddler enables us to work on all projects simultaneously with very minimal settings needed for each project. It not only increases our productivity(users need to learn less applications) but also reduces cost (reduces number of applications needed to buy) ### 12. Fantastic tool **Rating:** 5.0/5.0 stars **Reviewed by:** Adam W. | Software Engineer, Small-Business (50 or fewer emp.) **Reviewed Date:** May 19, 2022 **What do you like best about Progress Telerik Fiddler?** My work involves a lot of integration with third party APIs, this tool provides a clear breakdown of API calls and makes it really simple to see the raw request so that we can write code to build that same request. We have found that in a lot of cases, it highlights missing headers in the requests as well as gives the raw json data which is easy to pull out and create matching classes It's so simple to use, really easy to filter out requests to only see the bits that you are actually interested in It's such a useful and well built project that I insist all developers on my team have it so that they can use it for debugging and to aid in building new integrations. Invaluable tool, cannot recommend it enough **What do you dislike about Progress Telerik Fiddler?** Nothing! This is a fantastic product and I have nothing that I can say I dislike about it **Recommendations to others considering Progress Telerik Fiddler:** It's such a simple yet effective tool, there are so many uses for this within IT especially within API development or integration, try it and thank me later **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** As mentioned in the above statement, the main issue that this solves is to get raw request and response details to make it easier to build out api requests that are being made and re-create them in code as well as sending raw details to support teams when something goes wrong ### 13. Makes My Life Easier **Rating:** 5.0/5.0 stars **Reviewed by:** Amjad H. | Software engineer, Mid-Market (51-1000 emp.) **Reviewed Date:** June 24, 2022 **What do you like best about Progress Telerik Fiddler?** The ease of testing without the need to deploy my changes to servers. Working as a proxy is the best thing; so I can test anything I need **What do you dislike about Progress Telerik Fiddler?** I just dislike sometimes the complexity of adding new rules to fiddler, where I don't know sometimes what to choose from (Magic String, Response File ...) **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** It helps me in debugging my work (code) without the need to deploy them to servers, where it saves me a lot of time and prevents any harm that would happen if I deploy my changes without fully testing, where some changes can't be tested locally; so I would to deploy it in normal cases ### 14. Fiddler is a staple in my teams debugging process **Rating:** 5.0/5.0 stars **Reviewed by:** Alex N. | Sr. Dynamics Analyst, Mid-Market (51-1000 emp.) **Reviewed Date:** June 21, 2022 **What do you like best about Progress Telerik Fiddler?** This tool is perfect to run code locally without ever having to publish changes to a server. It's proved much more useful and intuitive to set up than other tools. **What do you dislike about Progress Telerik Fiddler?** The only downside would be auto filtering options on requests are not very robust but I'm still able to find what I'm looking for manually using the search box **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** We use Fiddler as a proxy in our development process. We're able to save countless hours by running code locally instead of publishing changes. This makes it very easy to test and confirm code changes work properly before pushing anything to production. ### 15. Fiddler Everywhere is a great tool to setup proxy server **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Computer & Network Security | Small-Business (50 or fewer emp.) **Reviewed Date:** May 19, 2022 **What do you like best about Progress Telerik Fiddler?** I liked how I can customize my proxy responses and then save them and export them. Fiddler is also very convenient to use. Good for beginners too. I also liked using Autoresponder. **What do you dislike about Progress Telerik Fiddler?** In order to delete a custom response, I have to manually delete each one of them. There should be an option to delete everything at once. Also the import and export can be updated **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** I am using it to create a proxy server in order to serve a proper response to API interception and autoresponder. It can also be used to send requests too I believe ### 16. Easy debugger for front-end developers **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Financial Services | Enterprise (> 1000 emp.) **Reviewed Date:** January 23, 2022 **What do you like best about Progress Telerik Fiddler?** The third-party application is safe and secure and is able to intercept API calls over the internet. The navigation across tabs is quite user-friendly in nature. It not only records the response data but also records the request data. It can alter the data while sending to the server and alongside while receiving from the server which helps in testing the end to end behaviour of the application and where it can break the normal flow. Tracking the speed of the data flow is another important feature of the software which is noteworthy. The main differentiator of the product is that alteration and testing can be done on a local codebase while developing. It greatly reduces time to market. **What do you dislike about Progress Telerik Fiddler?** The software is not allowed on all corporate networks though the free version is available. Other than that, the requests when imported to LoadRunner is not smooth and up to the mark. The online response of the customer team could have been better and since this software is still not widely used there are relatively less resources over the internet. **Recommendations to others considering Progress Telerik Fiddler:** It is a very useful software for front end development if your corporate networks allow to use it or have bought the premium version of the software. **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** The different responses from the same API can be created synthetically and tested how the UI will respond. It reduced the efforts and increased efficiency of the front-end developers who don't have to depend on the varied API responses for development. ### 17. A must tool for web developers **Rating:** 4.5/5.0 stars **Reviewed by:** Yawar A. | Software Developer, Mid-Market (51-1000 emp.) **Reviewed Date:** August 24, 2021 **What do you like best about Progress Telerik Fiddler?** There're a lot of features for almost every kind of developer, which is especially useful while debugging. Apart from the renowned "traffic capture" feature, there're options to encode/decode responses. It can even replace PostMan to test a web API. **What do you dislike about Progress Telerik Fiddler?** So far there's nothing that I dislike about this tool. But, if there's something I would like to get improved, it's the documentation. **Recommendations to others considering Progress Telerik Fiddler:** This is a great tool that's especially useful while debugging API's. Spend some time learning this tool and you won't regret it. **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** Debugging API's. Requesting tokens with saved API requests. ### 18. Are you a web developer? Here's my honest review then **Rating:** 3.5/5.0 stars **Reviewed by:** Verified User in Computer Software | Mid-Market (51-1000 emp.) **Reviewed Date:** November 02, 2021 **What do you like best about Progress Telerik Fiddler?** There are like hundreds of features for nearly lot of type for devs, which is especially useful when debugging the APIs. there are options to encode/decode responses. More intersting part is it can also be used in postman to test the APIs **What do you dislike about Progress Telerik Fiddler?** Umm... When it comes to such tools the only main issue I gonna face is its documentation... I struggled alot in the beginning to learn using its official documentation. **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** That's straight.... Testing the developed APIs token requests and many more ### 19. Review about fiddler as a debugging option for proxy **Rating:** 4.0/5.0 stars **Reviewed by:** Verified User in Program Development | Mid-Market (51-1000 emp.) **Reviewed Date:** August 24, 2021 **What do you like best about Progress Telerik Fiddler?** Fiddler is a very simple to use util. It is easy to understand how to use it and work with it. With this util, it is easy to monitor and track web application errors **What do you dislike about Progress Telerik Fiddler?** It does not monitor simple network protocols only we protocol (HTTP ) **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** I used Fiddler mostly to debug the server side code of our application with the ability to "see" the client messages. ### 20. Easy to use **Rating:** 3.5/5.0 stars **Reviewed by:** Verified User in Oil & Energy | Mid-Market (51-1000 emp.) **Reviewed Date:** October 28, 2021 **What do you like best about Progress Telerik Fiddler?** Third party Api debugging, being able to decrpty calls over the network **What do you dislike about Progress Telerik Fiddler?** Debugging using local host still difficult to setup **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** Mainly debugging, some benefits are intercepting calls and returning mock data ### 21. Fiddler everywhere - your own spy! **Rating:** 5.0/5.0 stars **Reviewed by:** Khoren M. | Senior software engineer, Mid-Market (51-1000 emp.) **Reviewed Date:** January 29, 2021 **What do you like best about Progress Telerik Fiddler?** Fiddler has a friendly user interface. Easy navigation across tabs. Filters on traffic. There is an opportunity to put filters on host, protocol, URL and more. Even you can multiple apply filters by conditions. Option to pause/start capturing Free version is available. Auto responder. **What do you dislike about Progress Telerik Fiddler?** Fiddler requires to login in order to use the app. **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** Checking network traffic to detect viruses. Saving requests in Composer allows me to save my time and did not require me to fill in request details each time when I open the app. ### 22. Fiddler rues **Rating:** 5.0/5.0 stars **Reviewed by:** Rost G. | Software Consultant, Small-Business (50 or fewer emp.) **Reviewed Date:** June 11, 2020 **What do you like best about Progress Telerik Fiddler?** Monitoring HTTP requests. Filtering. Ability to model various speed situations **What do you dislike about Progress Telerik Fiddler?** Simulation of requests is tricky. Invasive proxy settings. **Recommendations to others considering Progress Telerik Fiddler:** If your success depends on building web application, API or services Fiddler is essential in your toolbox. It helps you debug and analyze web applications by capturing network traffic between the servers (local or Internet) and your computer. Fiddler enables you to investigate incoming and outgoing data to monitor and modify requests and responses even before the browser receives them. Using Fiddler you also can throttle your connection speed to mimic all types of the pure internet connections. Powerful filtering functionality allows to fine tune the traffic capturing. **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** Fiddler is the best tool on debugging API calls ### 23. GREAT FOR TROUBLESHOOTING ISSUES **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Insurance | Small-Business (50 or fewer emp.) **Reviewed Date:** June 21, 2021 **What do you like best about Progress Telerik Fiddler?** THIS PRODUCT COMES IN HANDY WHEN NEEDING TO SHARE TECHNICAL DETAILS FOR TROUBLESHOOTING AN ISSUE **What do you dislike about Progress Telerik Fiddler?** I CAN'T THINK OF ANYTHING THAT I DON'T LIKE **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** MOSTLY USE TO COMMUNICATE WITH MICROSOFT ON REOCCURING ISSUES THAT NEED RESOLUTION ### 24. Fiddler's Straightforward and Simple **Rating:** 3.5/5.0 stars **Reviewed by:** Daniel H. | Mid-Market (51-1000 emp.) **Reviewed Date:** April 22, 2020 **What do you like best about Progress Telerik Fiddler?** I like that Fiddler is very upfront about what it does and provides an easy to use interface to do it. It is clear where I am supposed to input my requests as well as the request body and authentication information (among other things). It is also very easy for me to see my past requests and past results. They are all present on the same page which is nice because I don't have to navigate to multiple different locations. **What do you dislike about Progress Telerik Fiddler?** I dislike that Fiddler seems rather limited in its capabilities. It does not have a whole lot of functionality outside of simple REST requests that are run one at a time. I also do not like that I have to manually type out entire REST requests with exactly perfect syntax. It would be nice if it could do this in a more automated fashion. **Recommendations to others considering Progress Telerik Fiddler:** If you're going to use Fiddler, you need to know how REST requests are syntactically put together. There is no assistance for doing this within the application, so learning how to actually utilize it may be difficult. **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** I am able to easily test HTTP requests using REST. I am also able to quickly and easily access my past requests and save them to my computer to share with my coworkers. ### 25. Fiddler - A Path Maker **Rating:** 4.5/5.0 stars **Reviewed by:** Amol G. | Consultant, Mid-Market (51-1000 emp.) **Reviewed Date:** July 29, 2020 **What do you like best about Progress Telerik Fiddler?** The best thing I like about fiddler is that while developing whenever I get an error and if I want to see what services are firing on particular button , i simply start fiddler and capture the traffic due to which I can easily understand overall data flow of traffic. **What do you dislike about Progress Telerik Fiddler?** The one thing that I dislike i that ui is not user friendly as it takes time to understand the environment to new person . **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** I am using Fiddler for development purpose . ### 26. Fiddler Review **Rating:** 4.0/5.0 stars **Reviewed by:** Verified User in Computer Software | Enterprise (> 1000 emp.) **Reviewed Date:** November 15, 2020 **What do you like best about Progress Telerik Fiddler?** Depth analysis of the sent request and received response can be done. Details data is available. Network detail can be found easily. **What do you dislike about Progress Telerik Fiddler?** UI can be improved a bit. Online help be little better. **Recommendations to others considering Progress Telerik Fiddler:** Strongly recommended tool. **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** A great proxy server tool used to log, inspect, and alter HTTP and HTTPS traffic between a computer and the Internet. ### 27. My Experience on Fiddler **Rating:** 5.0/5.0 stars **Reviewed by:** Bharath d. | Software Consultant, Small-Business (50 or fewer emp.) **Reviewed Date:** December 01, 2019 **What do you like best about Progress Telerik Fiddler?** 1.It records HTTP and HTTPS requests and responses properly and saves it for the user to see. 2.We can see the total page weight HTTP caching and compression at a glance. 3. Decryption of HTTPS traffic and display,modifies web application requests using the man-in-the-middle decryption mechanism. 4.It Ensures the proper cookies, headers and cache directives are transferred between the client and server. 5.It Edits web sessions Easily. 6.It records the service's request and request data. 7.We can Configure Fiddler to decrypt all traffic, or only specific sessions. 8. It helps us to debug web applications by capturing network traffic between the Internet and computers. 9.It inspects incoming and outgoing data to monitor and modify requests and responses before the browser receives them. 10.It can be useful for troubleshooting scenarios like When a JavaScript error caused JavaScript code affects your application. **What do you dislike about Progress Telerik Fiddler?** 1.Fiddler does not support HTTP Pipelining . 2.Its HTTPS decryption feature does not work well with authenticating proxy servers upstream. 3.If there are more recording it is some what diffcicult to find the particular service data. **Recommendations to others considering Progress Telerik Fiddler:** I would Recommend to use Fiddler. **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** 1.Fiddler records all HTTP(S) requests and responses between your computer and the Internet. 2.It Decrypts HTTPS traffic and display,modify web application requests using the man-in-the-middle decryption mechanism. 3.It Ensures the proper cookies, headers and cache directives are transferred between the client and server. 4.We can use Fiddler to decrypt all traffic, or only particular sessions. ### 28. Awesome tool **Rating:** 5.0/5.0 stars **Reviewed by:** Loveleen S. | Software Test Engineer, Mid-Market (51-1000 emp.) **Reviewed Date:** September 21, 2020 **What do you like best about Progress Telerik Fiddler?** I use Fiddler Everywhere in my everyday testing of mobile apps and websites. It has become one of most important tools in my tool set. **What do you dislike about Progress Telerik Fiddler?** I haven't experienced any major issues with Fiddler. **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** Capturing internet traffic, mocking api request and responses etc. ### 29. Fantastic and must have tool for performance engineers **Rating:** 5.0/5.0 stars **Reviewed by:** Rohit S. | Lead Performance Engineer, Enterprise (> 1000 emp.) **Reviewed Date:** November 08, 2019 **What do you like best about Progress Telerik Fiddler?** We use fiddler for our day to day activity of recording the application flow, capturing the rendering times of the pages, checking the network and latency and on many occasions debugging the issue as well. We like the way how we can save our session and import them in loadrunner to create loadrunner compatible custom requests. That makes easy for us to capture those request which are not captured in loadrunner and since we can import them directly into loadrunner that makes this tool very very useful. **What do you dislike about Progress Telerik Fiddler?** While importing the requests captured in fiddler to loadrunner, presently it just imports them and create custom request. But in cases where we have huge no of requests which are needed to be imported, it becomes difficult in loadrunner to match how many requests are for which transaction. We would love to have a feature where while importing fiddler also create transactions in loadrunner on the basis of comments we have given for group of transactions. **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** In loadrunner many times requests donot get captured. So via fiddler it is possible to capture each and every request and then import them easily on loadrunner. ### 30. Best Inventory for Web Debugging **Rating:** 4.5/5.0 stars **Reviewed by:** Ravinder Kumar S. | Software Consultant, Enterprise (> 1000 emp.) **Reviewed Date:** December 04, 2019 **What do you like best about Progress Telerik Fiddler?** Fiddler is the best web sniffer software tool with high quality proxy solution for web debugging. It is platform independent, OS independent and compatible with almost all browsers and also its "Free". It allows manipulation of web sessions with simple breakpoints and pause sessions. For intercepting network traffic at HTTPS endpoints Fiddler inserts new certificate in SSL keychain for decryption. There are many plugins available for Fiddler. Some of the plugins can perform advance analysis of a website like generating content security policy and input fuzzing. **What do you dislike about Progress Telerik Fiddler?** -If Fiddler is running, we cannot login in Arcos. -Difficult to reconstruct high level scenarios. -It cannot monitor request when using local addresses. -User interface can be improved. **Recommendations to others considering Progress Telerik Fiddler:** Its the best web debugging solution with HTTPS decryption option. It also has a paid enterprise support package which is a bit costlier. **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** I used it for capturing request and response of the web services triggered through our application. It greatly helps me in resolving the issues related to the request associated with the web services and rest APIs. We can edit and replay the request to recreate the scenarios for investigating traffic. Performance testing of a web application can done with ease. ### 31. Fiddler **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Program Development | Mid-Market (51-1000 emp.) **Reviewed Date:** December 02, 2019 **What do you like best about Progress Telerik Fiddler?** Fiddler one among the best tool to debug your web application. This tool will help you to understand the input and the output received to your web services. And also the traffic on your application server. Best thing about fiddler is it will easily capture all web service that got failure and what is the response your received. This will also help you to understand what are all the services that are fired on click of any event object. This tool is open source, any one can download and check it. **What do you dislike about Progress Telerik Fiddler?** When your fiddler start capturing the service, your mail service Outlook won't be able to send email. Also it is not that user friendly. **Recommendations to others considering Progress Telerik Fiddler:** Best tool to debug your web application. **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** I work on web application for icici Prudential. This tool has helped me in identifying all other web services that got fired on the user interface, events, buttons, form init done. Very importantly it helped me find easily which service got failed. ### 32. A must-have for network packets analysis **Rating:** 5.0/5.0 stars **Reviewed by:** James L. | Software Developer, Small-Business (50 or fewer emp.) **Reviewed Date:** September 19, 2019 **What do you like best about Progress Telerik Fiddler?** Fiddler logs efficiently every packet going through your network driver, HTTPS decryption is supported, ability to use your computer as a proxy for mobile and other devices like applications. Universal Windows Platforms apps are also supported through WinConfig which is very useful for these kind of applications. **What do you dislike about Progress Telerik Fiddler?** Fiddler search features are very slow, uncompressed requests searches can be applied but in most of cases for big scans it causes Fiddler to stop responding or in the worst of cases crash. **Recommendations to others considering Progress Telerik Fiddler:** Fiddler is the best solution for effective packet analysis, always in improvement. **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** Researching security flaws on applications and software, to highlight what should be fixed. ### 33. Best web request debugging tool **Rating:** 4.0/5.0 stars **Reviewed by:** Naresh V. | consultant, Mid-Market (51-1000 emp.) **Reviewed Date:** December 01, 2019 **What do you like best about Progress Telerik Fiddler?** We can easily track or debug the we request it will provide complete input and output of the request in different format s.we can download the sessions for the reference and we can encoding and configure rules **What do you dislike about Progress Telerik Fiddler?** It will capture huge unnecessary request **Recommendations to others considering Progress Telerik Fiddler:** The best tool for analysis of execution of web services **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** When unknown issues occurred In runtimes environments easily I could able to find the root cause ### 34. The most reliable tool for Traffic recording and HTTP debugging **Rating:** 4.0/5.0 stars **Reviewed by:** Verified User in Information Technology and Services | Enterprise (> 1000 emp.) **Reviewed Date:** October 22, 2019 **What do you like best about Progress Telerik Fiddler?** Fiddler is the best tool in the market for web traffic monitoring and debugging it is 1. Easy to use for web monitoring . 2. Great facility for having a rules to be applied on the request and response. 3.Auto res ponder and the statistics feature is just awesome. 4.we can replay selected requests (API). 5.we can apply proxy for the incoming and outgoing request across all applications. **What do you dislike about Progress Telerik Fiddler?** It do sent captures some requests from specific applications and sometimes browsers get hanged up by Turing fiddler on. **Recommendations to others considering Progress Telerik Fiddler:** If you are looking for a great web debugging and monitoring tool just go for fiddler. **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** We mostly use fiddler tool for diagnosing and debugging crucial issues related to application and also to view the performance of the API. which gives us a great feasibility for API testing. ### 35. Fiddler the web debugging tool **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Information Technology and Services | Mid-Market (51-1000 emp.) **Reviewed Date:** December 04, 2019 **What do you like best about Progress Telerik Fiddler?** You can edit web sessions easily. And best thing is its free.data can be seen in any format xml jason etc. You can monitor web traffic. **What do you dislike about Progress Telerik Fiddler?** Sometimes server request get missed.web filtering is not available in this application. **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** To review what data is being sent to the sever and the responses i receive for each call. Developing web automation through HTTP requests. ### 36. Fiddler -Friendly debbuging tool **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Financial Services | Mid-Market (51-1000 emp.) **Reviewed Date:** December 01, 2019 **What do you like best about Progress Telerik Fiddler?** Fiddler can be best used to capture the services getting called. **What do you dislike about Progress Telerik Fiddler?** It stops some of the applications from running. **Recommendations to others considering Progress Telerik Fiddler:** You can definitely use fiddler for capturing your services and to know the response time for the particular service **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** We can easily know the services which are getting aborted. ### 37. Best tool for web traffic recording, manipulating debugging and web testing **Rating:** 4.0/5.0 stars **Reviewed by:** Vyankatesh J. | Senior Specialist- Quality Engineering, Enterprise (> 1000 emp.) **Reviewed Date:** April 15, 2019 **What do you like best about Progress Telerik Fiddler?** 1. Easy to use for Web Traffic monitoring. 2. Supports browsers like chrome, mozilla, safari, IE, opera etc with proxy manipulation. 3. Good formats available as Raw, JSON etc for Web traffic debugging to identify cookie, header, cache used 4. API calls can be replayed or certain http calls can be made such as 500, 404, 401 etc. 5. Recording performance of the call is easy by reading time taken and the size of file etc. 6. http and https traffic cane be decrypted and manipulated using rules and proxy settings. **What do you dislike about Progress Telerik Fiddler?** 1. Enterprise priority support package is very expensive compared to the basic free version. 2. Sometimes few server requests get missed as well as extra web filtering options would be appreciated. 3. Mobile testing support can be improved to cover large growing market. 4. **Recommendations to others considering Progress Telerik Fiddler:** 1.Good tool for overall use in web monitoring, manipulating, debugging and security, performance testing. 2. Easy to use on multiple OS like windows, mac, linux and overall wide browser supports. 3. Editing web sessions and managing various devices on large network is easy using this tool. **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** 1. Web traffic monitoring and debugging for API calls under development. 2. Performance testing using time taken for each call, page weight, compression. 3. Comprehensive security testing to decrypt https traffic manipulating the web sessions. 4. Saving specific or all all sessions as per user requirement and sharing to other users help in debugging . ### 38. A Great Debugging tool with Old Language **Rating:** 4.0/5.0 stars **Reviewed by:** Rahul C. | Technical Lead, Information Technology and Services, Enterprise (> 1000 emp.) **Reviewed Date:** October 31, 2018 **What do you like best about Progress Telerik Fiddler?** The way it track URL navigation is accurate and fast. It also helps to debug the application directly from fiddler. We can also use for security testing. We get the output from various source., if there is any error on page we can easily track from fiddler. There are many different features which you can use, like Get Post method to do different changes. There is a feature where if the link go down, UI shows in red this is good indication to track any issue on web page. **What do you dislike about Progress Telerik Fiddler?** There are so many different features where we are not aware. The UI can be improved. **Recommendations to others considering Progress Telerik Fiddler:** Go for it. **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** It use to help us on debugging and finding the path of application. ### 39. Best friend for HTTP Request Developers **Rating:** 4.5/5.0 stars **Reviewed by:** Douglas L. | Financial Analyst, Small-Business (50 or fewer emp.) **Reviewed Date:** March 08, 2019 **What do you like best about Progress Telerik Fiddler?** The Traffic Capturing is awesome. We can track the http requests of a specific website that we'd like to create a web automation bot. The https decode function allows to see what is happening in the background and provides a full view of the cookies, requests and the http response along with all stuff sent by the web server, such as JSON, XML, etc. **What do you dislike about Progress Telerik Fiddler?** When the response body is very big, the frame doesn't show up everything. It's frustrating sometimes we need to export it to a notepad to see and analyse the results. **Recommendations to others considering Progress Telerik Fiddler:** I highly recommend this to developers who need to create web bots for automation. **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** Developing web automation through HTTP requests. The aftermath, we have productivity gains for our users. This means time savings that can be converted into money savings to the company and quality to the services outsourced. ### 40. Fully Test Your Web Application With Fiddler! **Rating:** 3.5/5.0 stars **Reviewed by:** DaLarm H. | Software Engineer, Computer Software, Enterprise (> 1000 emp.) **Reviewed Date:** November 29, 2018 **What do you like best about Progress Telerik Fiddler?** I like how simplistic the application is. I don't really have to do many setting changes in order to get started. Once I get my phone to connect properly to Fiddler, it's pretty easy from there. I like how you can filter out processes based on what you want. I tend to filter out the processes so that it only shows the urls that I'm browsing on my phone. **What do you dislike about Progress Telerik Fiddler?** However, I wouldn't necessarily call this application intuitive. I definitely had to ask for guidance/help both online and offline. To be honest, I'm still not entirely sure how it all works. I feel like this application would be a bit better if there was more documentation on how it worked. I did find an instructional guide on how to use Fiddler with my phone. However, the instructional guide was pretty straight-forward. I would've liked it ab it more if it was more in-depth. **Recommendations to others considering Progress Telerik Fiddler:** I would recommend this application for any Web Developer or Software Engineer that is handling a web application. Fiddler is very useful for mobile testing. **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** The main reason I've been using Fiddler at work is to do extensive testing on the web features/functionalities that I've coded. Although using an emulator on Chrome/Firefox tends to work most of the time, I think it's best practice to test out code on an actual mobile device. Fiddler lets me test out my web functionalities without pushing my code into production. When my phone connects, my phone can browse using the development server that I'm connected to on my laptop. So my phone can test out my code pre-production. ### 41. Telerik Fiddler Review **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Information Technology and Services | Mid-Market (51-1000 emp.) **Reviewed Date:** January 14, 2019 **What do you like best about Progress Telerik Fiddler?** Fiddler is one of the best online tool available right now for monitoring and analyzing web traffic. In Fiddler, you can easily find out almost everything with respect to web request like Headers, Text View, Syntax View, Cookies etc. of a request. All in all, this becomes very helpful for a developer or user who is analyzing web traffic requests. **What do you dislike about Progress Telerik Fiddler?** As every good software fiddler too has few issues as well. If used for too long to analyze web requests, fiddler becomes too slow and at times becomes unresponsive as well. Ability to selective filter requests is not available in Fiddler and can be a nice feature addition in future. **Recommendations to others considering Progress Telerik Fiddler:** Fiddler is one of the best market available tool right now to monitor, analyze and understand web traffic requests. Fiddler is headed in the right direction and is a delight to use when writing web APIs. **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** I use Fiddler to monitor web traffic which helps me in developing web services and web APIs for my software product. ### 42. If you know how to use it, you will get a great value from it **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Hospital & Health Care | Enterprise (> 1000 emp.) **Reviewed Date:** January 08, 2019 **What do you like best about Progress Telerik Fiddler?** I use it mainly to debug cloud service calls for the application I support. It tracks every service call with great details. **What do you dislike about Progress Telerik Fiddler?** It can slow down your machine if you have too many things open because traffic is rerouted through it. Also if you don't close it correctly and leave it to crash, it could stop your internet connection. **Recommendations to others considering Progress Telerik Fiddler:** Careful when you use it to not leave it open for a long time. Also try not to make it crash. It's still an open source free product. **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** helps us verify service calls and make sure that we aren't making too many calls that slows down the services. ### 43. Fiddling with web apps is easy with Fiddler **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Hospital & Health Care | Enterprise (> 1000 emp.) **Reviewed Date:** November 02, 2018 **What do you like best about Progress Telerik Fiddler?** I use Fiddler more than any other "helper" application that we run at work. The ease of access to the detail Fiddler providers in what's going on in my web requests goes way beyond anything else I've used. When I've exhausted all other debugging options (which is often) Fiddler always bails me out because I can see what's going on behind the scenes and along the wire. **What do you dislike about Progress Telerik Fiddler?** While this isn't totally Fiddler's fault, I sometimes forget to close Fiddler and it gets in the way of publishing or other tasks that fail while a proxy is running. But it's easily fixed by simply closing Fiddler **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** Fiddler saves a TON of time normally spent on debugging problems that may not be visible otherwise. I've realized that without it, there are some problems I would just have never solved. ### 44. Fiddler Usage on Mac for REST calls **Rating:** 2.5/5.0 stars **Reviewed by:** Phuc T. | Web Developer, Small-Business (50 or fewer emp.) **Reviewed Date:** July 20, 2018 **What do you like best about Progress Telerik Fiddler?** I was using Postman and then wanted to try Fiddler too to compare REST call response. So this is a brief review on just the REST call feature. I used Fiddler for just a basic usage and it ran the calls that I wished to test. Overall it does that task for you. I haven't tried the other features/tools or advanced features available, but it appears there are many, so I assume advanced developers are using or demanding such advanced features. **What do you dislike about Progress Telerik Fiddler?** It wasn't intuitive to install (for Mac) users. I understand it is on BETA, so it's somewhat expected. It's also expected in general that installing things via terminal is not always straight forward, but installing a desktop app on Mac App on mac, users typically expect a one step that it would be just through Installation wizards. It required installing Mono Framework first via terminal.. but there are directions on the Telerik blog to follow. If I recall, I had a few errors trying to install Mono that I wasn't able to resolve, but eventually tried to install Fiddler anyways, and it ran. The other thing was the set up to get going also wasn't intuitive. Postman and other applications just have you post the url, the data and run. Fiddler, however had several options to enter your server information. I believe the advantage of that, is direct connection. For my purpose, I just needed to simply enter http url, info and run, so to quickly test. It is possible because I am not too familiar with all the backend configuration which Fiddler gives options to, that it is confusing for me to fill out and make use initially. I would have to further investigate if I were to continue to test REST calls, using Fiddler tools. **Recommendations to others considering Progress Telerik Fiddler:** If you're using Fiddler to test REST calls, it does do the job. If you're an advanced user, perhaps it appears there are many options available to make use of the Application's advanced features. If you're a Mac user, just read up on the installation process and the extra steps required. **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** I needed to use Fiddler to test a few REST calls, to see if the 3rd party APIs were running, properly. I wanted to verify that it wasn't just an error in my code, or running a REST call through command line. Over all, Fiddler returned the same data so I was able to verify that it was likely not an error on my end. So I trust that I can rely on checking with applications like Fiddler, that was developed by a team of experts. ### 45. Fiddler - One of the Best Security & Tracking Tool **Rating:** 5.0/5.0 stars **Reviewed by:** Swapnil S. | Associate Architect, Computer Software, Mid-Market (51-1000 emp.) **Reviewed Date:** July 13, 2018 **What do you like best about Progress Telerik Fiddler?** Fiddler makes REST API debugging quite Simple. At every REST call, just put a debugger and see the actual calls that are being made, with complete header and payload. Also, it's ability to repeat requests to a website which allows me to debug at a rapid speed. **What do you dislike about Progress Telerik Fiddler?** Lot of warnings/certificates acceptance when enabling decryption of HTTPS data. Otherwise, I think it is the simplest tool with all the functionalities working smooth as expected from it. **Recommendations to others considering Progress Telerik Fiddler:** If you are web developer or programmer, just run your system on Fiddler to see how well your server is doing. Also, the ease of Use and the performance speed is just great. So, if you are a web Developer or relevant, just go for it.!! **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** Debugging servers and REST Calls, analyzing performance, finding any error, checking security loopholes. Without Fiddler, I think all of this would have been really terrible and difficuly ### 46. REST assured (pun intended) **Rating:** 5.0/5.0 stars **Reviewed by:** Anthony J. | Programmer, Mid-Market (51-1000 emp.) **Reviewed Date:** July 10, 2018 **What do you like best about Progress Telerik Fiddler?** Fiddler made debugging APIs easier and comprehensive. It provides the user with complete details of each network requests and provides a user-friendly UI where you can disect information of each network request. It also has a filter to only see requests coming/going to a specific domain. Outputs can be viewed in JSON, XML and RAW formats. It works well with PostMan. **What do you dislike about Progress Telerik Fiddler?** The usefulness of this product overcomes one thing I don't like about it which is the UI. It looks like an old software. **Recommendations to others considering Progress Telerik Fiddler:** This tool is a great help especially in developing Web API's. It's free to use. **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** It provided us with great support in developing our API endpoints. ### 47. Fiddler review **Rating:** 5.0/5.0 stars **Reviewed by:** Saurabh K. | Senior Software Development Engineer, Information Technology and Services, Enterprise (> 1000 emp.) **Reviewed Date:** November 20, 2017 **What do you like best about Progress Telerik Fiddler?** Fiddler is an amazing tools I have been using for about 4 years now. It makes REST api debugging a breeze. At every rest call, just put a debugger and see the actual calls being made, with complete header and payload. And the best part it decrypts https data too (if allowed). Data can be seen in any format (xml, json or raw) Requests can be composed at runtime to trigger various cases. Rerun is trivial of same requests with modifications. Fiddler rules to handle automated responses. **What do you dislike about Progress Telerik Fiddler?** Its difficult to say, as its been helping me a lot with debugging. But a filter with specific domains might be helpful. Currently I have to search for the domain I am debugging for. Lot of warnings/certificates acceptance when enabling decprtion of HTTS data (expected though) Difficult to connect with Android/iOS devices **Recommendations to others considering Progress Telerik Fiddler:** Fiddler is a great tool to use, but recently I have seen POSTMAN from google alos emerging with similar features. But still POSTMAN has a long way to go. **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** Mainly I use it for development/debugging of REST interfaces which I have to write for both Android and desktop interfaces. Ease of development. The pace of development have increases drastically. Security audit can be performed and product can be made secure. ### 48. Nice tool to test your APIs. **Rating:** 3.5/5.0 stars **Reviewed by:** Gurmeet S. | Programmer Analyst, Information Technology and Services, Small-Business (50 or fewer emp.) **Reviewed Date:** July 30, 2018 **What do you like best about Progress Telerik Fiddler?** Its a very good and easy to use tool to monitor incoming and outgoing data over http/https. Its very handy for API testing. **What do you dislike about Progress Telerik Fiddler?** GUI is not as good as Postman. History of api calls is not maintained. **Recommendations to others considering Progress Telerik Fiddler:** Use fiddler to test your APIs. Its very nice and easy to use to tool for web APIs. **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** We are developing new API end points for our application. We use fiddler to test these API end points and monitor incoming and outgoing data to/from these APIs. ### 49. Necessary in any Performance test **Rating:** 4.5/5.0 stars **Reviewed by:** Alex G. | Senior QA Engineer / Scrum Master, Computer Software, Mid-Market (51-1000 emp.) **Reviewed Date:** July 17, 2018 **What do you like best about Progress Telerik Fiddler?** Its simple and comprehensive interface is the most interesting part of the application. It is really useful since it can offer you many necessary options when performing any test, whether it be performance and/or communication. **What do you dislike about Progress Telerik Fiddler?** The interface is possibly too outdated compared to today's applications. **Recommendations to others considering Progress Telerik Fiddler:** Everything is fine. Just improve the theme of the application. **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** It has offered us the solution to find the API calls without the need to have a development team behind to generate related documentation. ### 50. Correctly analyzes all requests **Rating:** 4.5/5.0 stars **Reviewed by:** ravi r. | Associate Software Developer, Computer Software, Mid-Market (51-1000 emp.) **Reviewed Date:** July 12, 2018 **What do you like best about Progress Telerik Fiddler?** We needed fiddler to know how the file uploading failed, and fiddler did it very nicely by telling the type of error. It operates in between the requests which make it very unique. Certificates can be attached very easily. It has caches analyzing which is perfect tool for getting to know if our web app behaved correctly or not. We get to know times of all requests and hence improve the api's which causes the bottleneck. **What do you dislike about Progress Telerik Fiddler?** The 1000 bucks for the complete support package for an year looks quiet over priced. It can not change the post variables. **What problems is Progress Telerik Fiddler solving and how is that benefiting you?** We added certificates with our request and tested it with fiddler. We used it as http/https proxy and analyzed our requests for our web application. ## Progress Telerik Fiddler Discussions - [What is Progress Telerik Fiddler used for?](https://www.g2.com/discussions/what-is-progress-telerik-fiddler-used-for) - 1 comment - [View Progress Telerik Fiddler pricing details and edition comparison](https://www.g2.com/products/progress-telerik-fiddler/reviews?section=pricing&secure%5Bexpires_at%5D=2026-05-31+09%3A16%3A30+-0500&secure%5Bsession_id%5D=0e61e5e6-17e8-4763-bef5-6ac670d2dfbf&secure%5Btoken%5D=bb2efe134695a06b09839eb3af7c446aed4282f12668d7c9a54c96b2e7f6ae36&format=llm_user) ## Top Progress Telerik Fiddler Alternatives - [Okta](https://www.g2.com/products/okta/reviews) - 4.5/5.0 (1,202 reviews) - [Termius](https://www.g2.com/products/termius/reviews) - 4.8/5.0 (255 reviews) - [SAP Fiori](https://www.g2.com/products/sap-fiori/reviews) - 4.3/5.0 (128 reviews)