Apache HTTP Server - Apache httpd has been the most popular web server on the Internet since April 1996
Charles Proxy - HTTP proxy / HTTP monitor / Reverse Proxy
Apache Tomcat - An open source software implementation of the Java Servlet and JavaServer Pages technologies
Postman - The Collaboration Platform for API Development
LiteSpeed Web Server - LiteSpeed Web Server (LSWS) is a high-performance Apache drop-in replacement.
Proxyman.io - Proxyman is a high-performance macOS app, which enables developers to view HTTP/HTTPS requests from apps and domains.