- Send/Cancel/Rerun HTTP request in editor and view response in a separate pane with syntax highlight
Cost / License
- Free
- Open Source
Application types
Platforms
- Mac
- Windows
- Linux
- Chrome OS
- Visual Studio Code

RequesterX is described as 'Free desktop HTTP client for API testing and development. Organize requests into nested collections, use environment variables for easy context switching, generate code snippets in 13 languages, and keep everything stored locally — no account required' and is a API Client in the development category. There are more than 50 alternatives to RequesterX for a variety of platforms, including Mac, Windows, Linux, Web-based and Flathub apps. The best RequesterX alternative is Bruno, which is both free and Open Source. Other great apps like RequesterX are Postman, Insomnia REST Client, Yaak and Hoppscotch.

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.








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




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.




Milkman is a JavaFx-based workbench for crafting requests / responses. It is not limited to e.g. http (or more specifically rest) requests but can be extended in any imaginable way. It is optimized for fast startup and efficient workflow.


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...

The Zero Trust API Client - A Secure & Free Alternative to Postman , Insomnia & Thunder Client.




All the user-friendliness of our Terminal version, now wrapped up in a sleek graphical interface.



Firecamp's GraphQL playground is all in one GraphQL debugging tool which let you debug, collaborate and document your GraphQL APIs within a team for all platform.



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.


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


