StackShareStackShare
Follow on
StackShare

Discover and share technology stacks from companies around the world.

Follow on

© 2025 StackShare. All rights reserved.

Product

  • Stacks
  • Tools
  • Feed

Company

  • About
  • Contact

Legal

  • Privacy Policy
  • Terms of Service
  1. Stackups
  2. Utilities
  3. API Tools
  4. API Tools
  5. Fiddler vs Insomnia REST Client

Fiddler vs Insomnia REST Client

OverviewDecisionsComparisonAlternatives

Overview

Fiddler
Fiddler
Stacks111
Followers123
Votes0
Insomnia REST Client
Insomnia REST Client
Stacks800
Followers652
Votes44

Fiddler vs Insomnia REST Client: What are the differences?

Introduction

In this Markdown code, we will discuss the key differences between Fiddler and Insomnia REST Client - two popular tools used for API testing and debugging.

  1. Authentication Support: Fiddler offers support for various authentication mechanisms such as NTLM, Kerberos, and SSL certificates. On the other hand, Insomnia REST Client provides basic authentication support but lacks advanced authentication mechanisms like NTLM and Kerberos.

  2. Interface and User Experience: Fiddler provides a more comprehensive and feature-rich interface with a wide range of tools and panels for inspecting and manipulating HTTP traffic. It offers advanced features like breakpoints, auto-responders, and script editors. Insomnia REST Client, on the other hand, has a simpler and more intuitive interface, focused mainly on making HTTP requests.

  3. Cross-Platform Compatibility: Fiddler is mainly designed for Windows and is not natively compatible with other operating systems. Meanwhile, Insomnia REST Client is a cross-platform tool, available for Windows, macOS, and Linux, making it more versatile and accessible.

  4. Plugin and Extension Ecosystem: Fiddler has a rich ecosystem of plugins and extensions that allow users to extend its functionality and add custom features. On the contrary, Insomnia REST Client has a limited range of plugins and lacks the extensive plugin ecosystem of Fiddler.

  5. Request Building Capabilities: Fiddler provides various methods for building complex HTTP requests, including a built-in composer, automatic request generation, and support for request templates. Insomnia REST Client also offers request building capabilities, but it may not be as extensive as Fiddler.

  6. Community and Support: Fiddler has been around for a longer time and has a larger user base, resulting in a more active community and comprehensive online support resources. Insomnia REST Client, although gaining popularity, may still have a smaller community and comparatively fewer online resources for troubleshooting and support.

In summary, Fiddler offers advanced authentication support, a comprehensive interface, and a larger plugin ecosystem, while Insomnia REST Client focuses on simplicity, cross-platform compatibility, and ease of use.

Share your Stack

Help developers discover the tools you use. Get visibility for your team's tech choices and contribute to the community's knowledge.

View Docs
CLI (Node.js)
or
Manual

Advice on Fiddler, Insomnia REST Client

Stephen
Stephen

Artificial Intelligence Fellow

Feb 4, 2020

Decided

Postman supports automation and organization in a way that Insomnia just doesn't. Admittedly, Insomnia makes it slightly easy to query the data that you get back (in a very MongoDB-esque query language) but Postman sets you up to develop the code that you would use in development/testing right in the editor.

361k views361k
Comments

Detailed Comparison

Fiddler
Fiddler
Insomnia REST Client
Insomnia REST Client

It is a free web debugging proxy for any browser, system or platform. It helps you debug web applications by capturing network traffic between the Internet and test computers. The tool enables you to inspect incoming and outgoing data to monitor and modify requests and responses before the browser receives them.

Insomnia is a powerful REST API Client with cookie management, environment variables, code generation, and authentication for Mac, Window, and Linux.

-
Mac, Windows and Linux;Data import/export;SSL client certificates;Response history;JSONPath and XPath;Preview rendered HTML;Multipart form;Query parameter editor;Configurable proxy;Cloud sync and sharing;Nunjucks templating;Filter requests;Toggle SSL validation;Keyboard shortcuts;Configurable timeout;HAR import;Usable at almost all sizes;Drag-n-drop organization;Responsive interface;Import from curl;
Statistics
Stacks
111
Stacks
800
Followers
123
Followers
652
Votes
0
Votes
44
Pros & Cons
No community feedback yet
Pros
  • 16
    Easy to work with
  • 11
    Great user interface
  • 6
    Works with GraphQL
  • 4
    Cross platform, available for Mac, Windows, and Linux
  • 3
    Opensource
Cons
  • 4
    Do not have team sharing options
  • 2
    Do not store credentials in HTTP

What are some alternatives to Fiddler, Insomnia REST Client?

Postman

Postman

It is the only complete API development environment, used by nearly five million developers and more than 100,000 companies worldwide.

Paw

Paw

Paw is a full-featured and beautifully designed Mac app that makes interaction with REST services delightful. Either you are an API maker or consumer, Paw helps you build HTTP requests, inspect the server's response and even generate client code.

Karate DSL

Karate DSL

Combines API test-automation, mocks and performance-testing into a single, unified framework. The BDD syntax popularized by Cucumber is language-neutral, and easy for even non-programmers. Besides powerful JSON & XML assertions, you can run tests in parallel for speed - which is critical for HTTP API testing.

Appwrite

Appwrite

Appwrite's open-source platform lets you add Auth, DBs, Functions and Storage to your product and build any application at any scale, own your data, and use your preferred coding languages and tools.

Runscope

Runscope

Keep tabs on all aspects of your API's performance with uptime monitoring, integration testing, logging and real-time monitoring.

RAML

RAML

RESTful API Modeling Language (RAML) makes it easy to manage the whole API lifecycle from design to sharing. It's concise - you only write what you need to define - and reusable. It is machine readable API design that is actually human friendly.

Apigee

Apigee

API management, design, analytics, and security are at the heart of modern digital architecture. The Apigee intelligent API platform is a complete solution for moving business to the digital world.

Hoppscotch

Hoppscotch

It is a free, fast and beautiful API request builder. It helps you create requests faster, saving precious time on development

Falcor

Falcor

Falcor lets you represent all your remote data sources as a single domain model via a virtual JSON graph. You code the same way no matter where the data is, whether in memory on the client or over the network on the server.

DuckRails

DuckRails

DuckRails is an open source development tool that helps developer mock API endpoints quickly & dynamically outside the application code.

Related Comparisons

Postman
Swagger UI

Postman vs Swagger UI

Mapbox
Google Maps

Google Maps vs Mapbox

Mapbox
Leaflet

Leaflet vs Mapbox vs OpenLayers

Twilio SendGrid
Mailgun

Mailgun vs Mandrill vs SendGrid

Runscope
Postman

Paw vs Postman vs Runscope