This document defines a "problem detail" as a way to carry machine-
readable details of errors in a HTTP response to avoid the need to
define new error response formats for HTTP APIs.

REDbot checks HTTP resources to see how they'll behave, pointing out common problems and suggesting improvements. Although it is not a HTTP conformance tester, it can find a number of HTTP-related issues.

Use `httpd-start' to start the web server. Files are served from
`httpd-root' on port `httpd-port' using `httpd-ip-family' at host
`httpd-host'. While the root can be changed at any time, the server
needs to be restarted in order for a port change to take effect.

This is a tool to manually explore and test HTTP REST webservices. Runs queries from a plain-text query sheet, displays results as a pretty-printed XML, JSON and even images.

HTTP Status Cats API

Charles is an HTTP proxy / HTTP monitor / Reverse Proxy that enables a developer to view all of the HTTP and SSL / HTTPS traffic between their machine and the Internet. This includes requests, responses and the HTTP headers (which contain the cookies and caching information).

Capture HTTP conversations regardles of browser or server technology