Requestly is a better alternative to Telerik Fiddler

4.8 ⭐ 1100+ Ratings, 200,000+ users

Trusted by 200k+ developers at →

Learn why people choose

Requestly over Telerik Fiddler

1. Simple, Fast & Powerful

Requestly offers a superior user experience due to its presence in the browser and its use of native Chrome APIs. This makes Requestly much faster and lightweight than Telerik Fiddler.

More Powerful than ModHeader

2. Gentle Learning Curve

Requestly is designed from bottom up to maintain a shallow learning curve. Moreover a detailed documentation, a learning academy, interactive guides & video tutorials make you a power user from Day 1.

3. Cross Platform

Requestly is available in two forms — a browser extension & a desktop application for all major platforms like Chrome & Chrome based browsers, Firefox, Safari, Edge, Brave, Opera, Vivaldi, Windows, Mac(Apple & Intel Chips), Linux.

4. Collaboration

Requestly facilitates seamless team collaboration by allowing you to create shared workspaces and synchronize rules across team members. This ensures everyone has instant access to the established rules, eliminating duplicate work.

5. Best Customer Support

Requestly is known to provide the best customer support to its customers. This is evident in the more than 1000 reviews on the Chrome Store testifying to the best support from the Requestly team.

6. Enterprise Ready


Requestly is enterprise-ready software, prioritizing security and organizational control with features like SSO, Team Management, SLAs, SOC-II compliance, Reporting and analytics, and Role-based access control.

7. GraphQL Support

Exclusive support for GraphQL APIs is available in Requestly. Unlike Fiddler, which is designed for REST APIs and struggles to handle GraphQL’s request structure. GraphQL relies on a schema-based approach, making it necessary to apply additional filtering to isolate specific operations within a request.

The Key Difference

Fiddler is a network traffic debugger built for traditional desktop application development. It provides a complex suite of features for capturing, filtering, and modifying network requests – ideal for deep dives into network behavior.

Requestly is a powerful, open-source web development, mocking, and debugging suite. Its intuitive interface, comprehensive documentation, and team collaboration features will streamline your workflow.

Additional Features

for frontend & QA teams

Mock Server

Set up API Mocks in a few seconds. Accelerates frontend development when the backend is not ready.

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Session Book

Capture and share HTTP sessions for faster bug reporting & debugging.
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API Client

A simple Postman like API Client to hit API endpoints and validate responses.
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Detailed Comparison of Requestly & Telerik Fiddler


Telerik Fiddler


Zero Proxy & VPN Issues


Modify HTTP Headers

Modify API Response

Modify URL

GraphQL Support

Inject Scripts

Page Level Filters


Team Workspaces


Mock Server

Capture Browser Sessions

API Client




For the developers, by the developers ❤️

From Debug to Deploy: Developers Trust Requestly

Awesome tool. I use it almost daily for my projects to modify request body, headers, etc. Would recommend it to every frontend developer out there. Thank me later 🙂 (Case Study)

Harsh Vats
Frontend Engineer at PingSafe

This is by far the best tool for managing request headers! Plus the developers are very active meaning you’ll get help if you’re ever stuck or need help solving a problem. I use it daily and couldn’t be happier.

Jose Browne
Senior Engineer at Reddit

App works as expected! Ran into some small issues while creating the rules but the support team was able to help and overcome those.

José Miguel Dias Fernandes
Development Lead at Vodafone

Requestly is user-friendly, brilliant and easy-to-use. I use it on an daily basis and it makes my work easier. After using other tools like Charles – Requestly is a nice new breath of air that I highly vouch for. Apart from the tool being amazing – the support from the Requestly team is phenomenal with them always going above and beyond for their clients.

Marius Ludick
Solutions Architect II at Amazon

Requestly is an amazing tool to get your development work less hassle. The product itself has evolved so much since day-1 and the company is really serious on helping their customer solves their problems. We had this nice session where they shared Requestly features and we were very impressed on its potential. A truly 5-star worthy.

Natchapol Thongruang
Senior Software Engineer at Agoda

Just loved the way Requestly saved several person hours for our dev team by allowing us to redirect and intercept requests. The simple yet efficient rules allowed us to seamlessly redirect requests from a single staging front-end server to local backend servers. This meant that our devs didn’t need to build or run the front-end server locally when focusing on backend tasks.

Srijan Bhatnagar
Senior Software Engineer at Atlassian

Requestly is awesome. I used to use Charles proxy in my day-to-day work but it always messed with my wifi. I haven’t had any issues with Requestly. Requestly’s UI is an amazing tool and great to work in.

Carl Hand
Senior Software Engineer at Workday

Requestly not just made it easier for us to develop, test & debug our code on our customer sites but also helped us do engaging product demos to our prospective clients.

Michael Levinson
Co-Founder & CPO at Joyned

I’m a big fan of Requestly, and use it on a daily basis as a QA Engineer. It removes the need to use Charles Proxy often, which is always nice. I can just use Requestly directly in Chrome

Mike Mitchell
QA Engineer at URBN