This website is being served from a Macintosh SE!
(This is just a stock image)
It is connected to a Raspberry PI over serial. The Mac SE is running MacTCP for the networking and MacPPP for sending the packets over serial. The serial connection is 38400 baud and the Mac can handel up to 3 concurent connections. The raspberry pi is running a reverse proxy with some caching, authentication and a rate limiter (so it dosn't get DDOS'd). The raspberry pi is forwarding traffic to this webpage you are one right now!
I took a USB RS-422 converter and connected it to a spliced up Mini DIN 8 cable I made. The cable connects to the modem port and provides serial to the raspberry pi.
The web server is written in C with the Retro68 SDK. The Mac SE is also connected to a Big Mess O' Wires Floppy Emu which allows an SD card to be connected to the SE and for it to apeer as a disk drive - how the server is loaded.
Note: The website is behind an NGINX proxy which adds caching, rate limiting and authentication so the Mac SE dosn't get overloaded. If pages load abnormally fast for a Mac SE or they are out of date, it's because they may be cahced. You can try again and reload in 5 seconds and they should be updated.