- Send/Cancel/Rerun HTTP request in editor and view response in a separate pane with syntax highlight
Platforms
- Mac
- Windows
- Linux
- Chrome OS
- Visual Studio Code

Apps similar to HTTP Toolkit include Insomnia REST Client, which is open source with a free version. Other options are Fiddler, mitmproxy, Hoppscotch and Burp Suite. You're spoiled for choice with API Clients like HTTP Toolkit: we list more than 50 alternatives for Mac, Windows, Linux, the web and iPad.

Humlix shows you an easy way of generating tests for your web APIs. All you need to do is create a test request using the test request builder within Humlix and give an example of how your endpoints look and what type of data they want.

API Tester is the first mobile app to test any type of API on the go. Test REST, GraphQL, WebSocket, SOAP, JSON RPC, XML, HTTP, and HTTPS APIs completely for free, on iOS or Android.



Open-source native macOS HTTP debugging proxy — intercept HTTPS, inspect APIs, mock responses, debug WebSocket & GraphQL. Community-driven. For developers, by developers.




Kreya is a GUI client for gRPC, REST and WebSocket APIs with innovative features for environments, authorizations and more.




Native desktop app for Windows offers high-performance REST and HTTP API testing, low memory and CPU use, custom methods, portable version, proxy support, multiple environments, code generation, multilingual interface, and import/export in light or dark themes.




Used httpyac CLI tool underneath, which helps you execute _.http and _.rest files. This can be used to quickly execute a single *.http file, but also to execute all files in a folder. httpyac supports HTTP, Rest, GraphQL, WebSocket und gRPC Requests

The goal of this project is to adds information about the HTTP headers in three ways:

Powerful IDE to work with API. Harness the power of scenarios, autocompletion and syntax highlight for API development. Write tests, share code without leaving the comfortable development environment.




Gotcha HTTP Client is a lightweight http client that allows you to make requests and inspect responses.




Proxygen is the best HTTP proxy tool for testing apps and debugging remote API endpoints right on your iPhone, iPad and Mac. And it’s built to delight you while doing it.



Httpiness is aimed to be a simple, straightforward HTTP client which minimizes time to configure, send, reconfigure and resend requests in order to maximize development efficiency.

