Proxyman is a native, high-performance HTTP debugging proxy app for macOS, iOS, Windows, and Linux. Capture, inspect, and mock HTTP/HTTPS requests with ease. The best Charles Proxy and Fiddler alternative for developers.

Most HTTP vulnerabilities don’t come from sophisticated attacks. They come from misunderstanding where your framework stops protecting you. This covers the edge cases that actually bite production APIs: Range headers, path traversal, encoding conflicts, and request smuggling

A free bulk domain (who is) checker tool for checking domain availability based on WHOIS lookups.

Quickly and easily assess the security of your HTTP response headers

http-server is a simple, zero-configuration command-line static HTTP server. Enough for production usage, simple and hackable enough to be used for testing, local development and learning.

A peer-to-peer hypermedia protocol to make the web faster, safer, and more open