Postman - The Collaboration Platform for API Development
Servistate - Send HTTP Requests - Inspect Response. - Measure Performance. - Organize Better. -
Thunder Client - Rest API client for VS Code, lightweight Postman alternative
Runscope - Log, monitor and measure your API usage to solve API problems fast.
Postman Workspaces - Organize and speed up API development work
HTTPie for Terminal - Developers all around the world rely on HTTPie for API testing.