Only for binding to ports under 1024 really, like 80 (http) and 443 (https). Once it has bound to the ports it can drop down to running as a low-privilege user (usually named www or httpd or similar).
On Linux you can allow your program to bind to those ports even without running the program itself as root.
When installed for example with the installer script, Ferron would run on a specialized user for running the web server. Ferron itself would also have "CAP_NET_BIND_SERVICE" capability set on its binary, so that it doesn't have to run as root.
