Alternatives to Graphical HTTP Client for all platforms with any license

Fiddler

Fiddler is a Web Debugging Proxy which logs all HTTP(S) traffic between your computer and the Internet.

Free Windows
HTTP Monitoring Monitor HTTP Traffic One click installation Add a feature

173 Like
Postman

Postman helps you be more efficient while working with APIs. Postman is a scratch-your-own-itch project. The need for it arose while one of the developers was creating...

Freemium $ $ $ Mac Windows Linux Web Chrome OS ... Chrome
Google Chrome Extensions Graphical interface REST API Add a feature

94 Like
Google Chrome Developer Tools

The Google Chrome Developer Tools provide an integrated environment for debugging, optimizing, and understanding a web application, or website, running in Google Chrome....

Free Open Source Mac Windows Linux Chrome
HTTPS Support Add a feature

142 Like
Insomnia REST Client

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

Freemium $ $ $ Open Source Mac Windows Linux
Separated workspaces Cloud sync Configurable request timeout Electron based ... GraphQL integration Import Curl commands Support for Keyboard Shortcuts Image Preview REST API SSL client certificates Support environment variables SVG Editors Variables Add a feature

55 Like
Firefox Developer Tools

Examine, edit, and debug HTML, CSS, and JavaScript on the desktop and on mobile.

Free Open Source Mac Windows Linux Firefox
Development API Web Browsers Based on Firefox Firefox Extensions Add a feature

25 Like
Paw

Easily craft your HTTP requests, try them, archive them. Setup HTTP Headers, URL parameters, form-encoded POST key-values or text. Get easy-to-read responses with well...

Commercial $ $ $ Mac
Html parsing Request Chaining Add a feature

34 Like
Advanced REST Client (ARC)

API testing tool. Which allows web developers to create and test custom HTTP requests.

Free Open Source Mac Windows Linux Chrome OS Chrome ... Chromium Chrome Web Store
REST API Add a feature

18 Like
HttpRequester

A tool for easily making HTTP requests (GET/PUT/POST/DELETE), viewing the responses, and keeping a history of transactions.
- Discontinued Doesn't support Firefox WebExtensions: https://github.com/tommut/HttpRequester/issues/43 Also latest commit d62a6ea on Mar 12, 2017.
Free Open Source Mac Windows Linux Firefox
Firefox Extensions REST API Add a feature

5 Like
RESTClient

RESTClient can be used to test variety of HTTP communications and RESTful webservices. Friendly GUI, rich functionalities.

Free Open Source Mac Windows Linux
No features added Add a feature

6 Like
RESTer

A REST client for almost any web service (Firefox and Chrome extension).

Free Open Source Mac Windows Linux Chrome Firefox
Google Chrome Extensions Firefox Extensions Project Organization Variables Add a feature

5 Like
NetworkMiner

NetworkMiner is a Network Forensic Analysis Tool (NFAT) for Windows. NetworkMiner can be used as a passive network sniffer/packet capturing tool in order to detect...

Freemium Windows
Portable Sniffer Add a feature

10 Like
StopLight

APIs are essential to every online business. StopLight helps companies manage their API lifecycle. Our visual modeling solution removes the massive amount of manual...

Free Personal $ $ $ Mac Windows Linux Web
No features added Add a feature

11 Like
HTTP Debugger

HTTP Debugger Pro - A Professional HTTP Sniffer and Analyzer for Developers

Commercial Windows
HTTP Monitoring Support of TFS Add a feature

4 Like
HTTP Toolkit

HTTP Toolkit is a suite of open-source tools for debugging, testing and building with HTTP(S).

Freemium Open Source Mac Windows Linux Web
No features added Add a feature

2 Like
HttpFox

HttpFox monitors and analyzes all incoming and outgoing HTTP traffic between the browser and the web servers. It aims to bring the functionality known from tools like...
- Discontinued The project is no longer developed. Last version, 0.8.14.1, released in May 2014, is not compatible with Firefox, but the extension still works on XUL-based Firefox forks like https://alternativeto.net/software/waterfox/ and https://alternativeto.net/software/palemoon/
Free Mac Windows Linux Waterfox Pale Moon
Customer Analytics Firefox Extensions HTTP Monitoring Legacy Firefox Addon ... Pale Moon Extension Static analysis Web log analysis Add a feature

9 Like