



Step CI is described as 'Open-source API Test Automation framework' and is an app in the development category. There are more than 50 alternatives to Step CI for a variety of platforms, including Mac, Windows, Linux, Web-based and Flathub apps. The best Step CI alternative is Bruno, which is both free and Open Source. Other great apps like Step CI are Postman, Insomnia REST Client, Hoppscotch and HTTPie for Terminal.




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.


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.







This is a tool to manually explore and test HTTP REST webservices. Runs queries from a plain-text query sheet, displays results as a pretty-printed XML, JSON and even images.

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.



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


