This web page is being served by a completely home-built computer: Bill Buzbee's Magic-1 HomebrewCPU. Magic-1 doesn't use an off-the-shelf CPU. Instead, its custom CPU is built out of ~200 74 series TTL chips.
Magic-1 is running a new port of Minix 2.0.4, compiled with a retargeted LCC portable C compiler. The physical connection to the internet is done via SLIP to a Linksys NSLU2 running OpenWRT Linux, and finally on to a home DSL line.