Postman - The Collaboration Platform for API Development
RESTed - RESTed allows developers to quickly format and make HTTP requests and view the response.
Insomnia REST - The most intuitive cross-platform REST API Client ð´
Advanced REST Client (ARC) - API testing tool. Which allows web developers to create and test custom HTTP requests.
soapUI - SoapUI Pro is one of the most prominent API testing platforms around, allowing developers to quickly prototype the functions of their apps and get them to market with little hassle.
Paw.cloud - Paw is a REST client for Mac.