Postman - The Collaboration Platform for API Development
TestMace - Powerful IDE to work with API.
Thunder Client - Rest API client for VS Code, lightweight Postman alternative
Insomnia REST - The most intuitive cross-platform REST API Client ð´
Proxyman.io - Proxyman is a high-performance macOS app, which enables developers to view HTTP/HTTPS requests from apps and domains.
API Tester - API Tester is the first mobile app to test any type of API on the go. Including REST, GraphQL, WebSocket, SOAP, JSON RPC, XML, HTTP, HTTPS.