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.