Browser addons — Google Chrome extensions

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.