C# HTTP / HTTPS Forward Proxy Server with basic authentication and firewall rules
https://github.com/agabani/PassThroughProxy
A proxy server built with c# can be both normal and MITM Proxy
This is an open source proxy server for windows machines with .NET Framework installed.
The server can act as a normal proxy server, forwarding all traffic to the destination without any tampering.
https://github.com/AdvancedHacker101/C-Sharp-Proxy-Server
https://github.com/nathan-alden-sr/proxy