HTTPDump - A simple, beautiful Webhook debugging tool.
Mac CLi - OS X command line tools for developers
Proxyman.io - Proxyman is a high-performance macOS app, which enables developers to view HTTP/HTTPS requests from apps and domains.
You-Get - Command-line utility to download media contents from the web
RegViz - Debugging regular expressions visually
Soft Serve - Soft Serve is a self-hostable Git server with a built in SSH interface, built for the command line.