



Yaak is described as 'The API client for modern developers. Call REST, GraphQL, and gRPC APIs from a simple and intuitive app' and is a API Client in the development category. There are more than 50 alternatives to Yaak for a variety of platforms, including Mac, Windows, Linux, Web-based and Flathub apps. The best Yaak alternative is Bruno, which is both free and Open Source. Other great apps like Yaak are Postman, Insomnia REST Client, Hoppscotch and Insomnium.




Design and debug APIs in a powerful visual editor. Describe and debug easily with JSON Schema support. Apidog is a complete set of tools that connects the entire API lifecycle, helping R&D teams implement best practices for API Design-first development.




FRequest is a fast, lightweight and opensource Windows / macOS / Linux desktop program to make HTTP(s) requests (e.g. call REST apis).




Loadmill helps developers easily create the tests required for continuous delivery by analyzing user behavior. Loadmill automates backend regression testing by replaying real user behavior. Through the use of smart recordings, the platform can create and replay thousands of...



Slingshot is a web-based HTTP request client that is highly performant, low on resources, privacy respecting, local-first, free and open-source. It stores all your data locally in your browser. It allows you to import and export OpenAPI specs and Postman collections.

Conektto's API lifecycle fabric is the world's first SAAS based visual designer for API that generates spec, mocks, visualization, code, test and test data automatically.




Helps you to test the Rest API with your phone including features like import, edit and export postman collections.With this, you don't need to look for your laptop or PC whenever you need to test and modify your REST APIs. You can work on them anytime, on the go.



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.



GetAPI is a native macOS app that simplifies REST API testing by allowing users to import from Postman, make HTTP requests, and view responses in a streamlined interface.








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.



