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

179 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
Api API Management Google Chrome Extensions Graphical interface ... REST API Add a feature

105 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

146 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 Api API Management Cloud sync ... Configurable request timeout Electron based GraphQL integration Import Curl commands Support for Keyboard Shortcuts Image Preview Request Chaining REST API SSL client certificates Support environment variables SVG Editors Variables Add a feature

69 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

32 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

37 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
Electron based REST API Add a feature

20 Like
RESTer

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

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

5 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
Built in docs HTTP mocking One click interception OpenAPI integration ... Performance analysis Themes Add a feature

8 Like
HTTP Debugger

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

Commercial Windows
HTTP Monitoring Support of TFS Add a feature

5 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
NetworkMiner

NetworkMiner is a Network Forensic Analysis Tool (NFAT) for Windows. NetworkMiner can parse PCAP files and regenerate/reassemble transmitted files and certificates from...

Free Open Source Mac Windows Linux
Network Monitoring Portable Sniffer Add a feature

11 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
getd.io

A free, online REST API builder that works with CORS. A Postman alternative without the native apps.

Free Software as a Service (SaaS)
Web-Based Api API Management GraphQL API ... REST API Websocket streams Add a feature

9 Like