



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




Upcoming API testing tool in beta, built in GoLang, supporting HTTP/gRPC, workspaces, environments, request management, and various content types. Features include dark mode, local data storage, Postman import, environment variable setting, and request chaining.













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




The API Astrolab enables today’s API-first companies to show their API products in a visual way so that anyone can understand how they work.



API Test Base is a free tool for integration testing a variety of APIs. It is suitable for Integration, ESB and Microservices testing.


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



Humlix shows you an easy way of generating tests for your web APIs. All you need to do is create a test request using the test request builder within Humlix and give an example of how your endpoints look and what type of data they want.

Treblle is a federated API Intelligence platform delivering full API visibility, security, and control from one integration point.



Powerful IDE to work with API. Harness the power of scenarios, autocompletion and syntax highlight for API development. Write tests, share code without leaving the comfortable development environment.



