Testing and validating REST services in Java is harder than in dynamic languages such as Ruby and Groovy. REST Assured brings the simplicity of using these languages into the Java domain.

Jest is a delightful JavaScript Testing Framework with a focus on simplicity.

Bruno is a Fast and Git-Friendly Opensource API client, aimed at revolutionizing the status quo represented by Postman, Insomnia and similar tools out there.

Voiden is a developer-first API client with local storage, Git-integrated, all based on markdown + offline support.

Simulate APIs, integrations, and environments at enterprise scale.

API Testing Platform that automatically generates unit test cases with dependency mocks from API calls