Postman - The Collaboration Platform for API Development
Airborne - RSpec driven API testing framework.
Thunder Client - Rest API client for VS Code, lightweight Postman alternative
REST-Assured - 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.
Insomnia REST - The most intuitive cross-platform REST API Client ð´
Rest Console - HTTP Client and Request Visualizer and Constructor tool, helps developers build, debug and test RESTful APIs