HTTP Archive : The HTTP Archive tracks how the Web is built.
wuzz : Interactive cli tool for HTTP inspection
Wuzz command line arguments are similar to cURL's arguments, so it can be used to inspect/modify requests cop...
HttpWatch : An HTTP Viewer and HTTP Sniffer for IE and Firefox
httpbin.org : A simple HTTP Request & Response Service.
toxy : toxy is a fully programmatic and hackable HTTP proxy to simulate server failure scenarios and unexpected network conditions, built for node.js/io.js.
