WebSpy: explore and test website
Allows to view all requests on any website, create and test custom HTTP requests. You can edit all request and response headers and body in XML/JSON/HTML/TEXT format. One of the best API testing and analysis tool. Allows to send GET, POST, PUT, PATCH, DELETE requests. Allows to repeat and edit any existing request. Built-in JSON, XML, CSS, HTML Viewer/Formatter. It's like a postman inside chrome. Useful to optimize and test your website.