Andiparos

Andiparos is a fork of the famous Paros Proxy.

Charles

HTTP proxy / HTTP monitor / Reverse Proxy

Fiddler is a debugging program for websites.

Examine, edit, and debug HTML, CSS, and JavaScript on the desktop and on mobile.

Debug HTTP API calls to a back-end and between back-ends. Easy of use, clean UI, and short ramp-up time. Not a proxy, no network issues!

HTTP Scoop is a Mac network sniffer that displays requests to websites along with the response, and…

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RESTClient can be used to test variety of HTTP communications and RESTful webservices.

GNOME GUI for configuring a users’ cron (automatic jobs). Some of its features are:

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What is ipfwThrottleBody? (formerly ipfwSingleThrottle)

mitmproxy is an SSL-capable man-in-the-middle proxy for HTTP.