Raspberry PI web server
This site is served on an old Raspberry PI model B computer. Goes to show that you don't need a massive piece of kit to serve up a simple site.
Would also add that this Raspberry PI is also being used as Reverse Proxy to another machine I have at home for anything is a little more resource intensive than this little PI can cope with. Interesting to see if it can cope with doing that, but then it should as it does not get much if any traffic at all.