TinyWall - Lightweight and non-intrusive firewall
CCProxy - Want to share Internet connection? Get every computer online through a single Internet connection?
Windows 10 Firewall Control - Windows 10 Firewall Control: simple and exhaustive solution for applications network activity controlling and monitoring.
Apache Traffic Server - Fast, scalable and extensible HTTP/S 2 and 1.1 compliant caching proxy server.
GlassWire - Visualize network activity in detail, get notified when new apps access the network, look out for...
3proxy - 3proxy freeware proxy server for Windows and Unix. HTTP, SOCKS, FTP, POP3