Complete , simple and powerfull , all option for band control included ! But free for only 3 user . I have not found better 20' min for reading instruction, installing and setup for non expert , (3' min for expert ) !
Squid Proxy - Website Content Acceleration and Distribution. Thousands of web-sites around the Internet use Squid to drastically increase their content delivery. Squid can reduce your server load and improve delivery speeds to clients.
Surge for Mac - Advanced Web Debugging Proxy for Mac & iOS
3proxy - 3proxy freeware proxy server for Windows and Unix. HTTP, SOCKS, FTP, POP3
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Apache Traffic Server - Fast, scalable and extensible HTTP/S 2 and 1.1 compliant caching proxy server.
Charles Proxy - HTTP proxy / HTTP monitor / Reverse Proxy