Wow, this is a relic of another time. Seems like most of the features date from the 2000s, when XSLT was a thing, or the 2010s. The name is also obviously a pun

Wow, this is a relic of another time. Seems like most of the features date from the 2000s, when XSLT was a thing, or the 2010s. The name is also obviously a pun on Apache webserver, the defacto standard at that time. In the meantime, web servers got more slim, routers for actual FCGI or reverse proxied HTTP applications behind. Lighttpd and nginx were pioneering in that direction in the 2010s, and while I never heard about hiawatha, I guess it falls in the similar direction (having FastCGI already 2006). Another funny thing is that nowadays, when people say "security" along with "webserver", they mostly mean something like integrated certbot ("automatic HTTPS"), like https://caddyserver.com/ https://caddyserver.com/ does.