



Restretto is described as 'Minimal native and free REST API client for Mac' and is a API Client in the development category. There are more than 50 alternatives to Restretto for a variety of platforms, including Mac, Windows, Linux, Web-based and Flathub apps. The best Restretto alternative is Bruno, which is both free and Open Source. Other great apps like Restretto are Postman, Insomnia REST Client, Yaak and Hoppscotch.




Thunder Client is a hand-crafted lightweight Http Client extension for Visual Studio Code. No separate download needed, Just install the extension from VS Code marketplace.



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.


