There are many alternatives to Rest Client for Mac if you are looking for a replacement. The best Mac alternative is Insomnia REST Client, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Rest Client and many of them are available for Mac so hopefully you can find a suitable replacement. Other interesting Mac alternatives to Rest Client are Postman (Freemium), Google Chrome Developer Tools (Free, Open Source), Paw (Paid) and soapUI (Free, Open Source).
Postman is a tool that facilitates the development and use of APIs. Postman provides all the functionality needed to create or simulate API specifications and use the Postman Collection Runner to create tests.
Easily craft your HTTP requests, try them, archive them. Setup HTTP Headers, URL parameters, form-encoded POST key-values or text. Get easy-to-read responses with well formatted headers and body. Sync your projects with your team through Paw for Teams.