A fast Desktop API client. Design OpenAPI specs visually. Linear and Visual Flow runner. API testing with assertions. Debug with timing breakdowns — with HTTP/GraphQL/WebSocket/SSE support.




Roster HTTP Client is described as 'Modern HTTP client for GNOME with GTK 4 UI, supports GET/POST/PUT/DELETE, custom headers, secure environment variables, projects, request history, cURL export, and syntax highlighting' and is a HTTP Client in the development category. There are more than 10 alternatives to Roster HTTP Client for a variety of platforms, including Linux, Mac, Windows, Flathub and Flatpak apps. The best Roster HTTP Client alternative is Bruno, which is both free and Open Source. Other great apps like Roster HTTP Client are Postman, Insomnia REST Client, Yaak and Insomnium.
A fast Desktop API client. Design OpenAPI specs visually. Linear and Visual Flow runner. API testing with assertions. Debug with timing breakdowns — with HTTP/GraphQL/WebSocket/SSE support.




RequesterX is a 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.

Talend API Tester makes it easy to invoke, discover and test HTTP and REST APIs.




API Dash is a beautiful open-source cross-platform API Client built using Flutter which can help you easily create & customize your API requests, visually inspect responses and generate API integration code. A lightweight alternative to postman/insomnia.


EchoAPI is an all-in-one API development collaboration platform that offers essential features like API debugging, design, automated testing, stress testing, and documentation generation.
Use Test API for restful api testing. This postman alternative test rest api online and use post request online to test API endpoint.

Send HTTP requests to API endpoints. GetIt's main focus is to make your life a lot easier when you have to test APIs or use somebody else's API.



