This site is served from a Mac Pro computer running Mac OS X, MySQL and PHP. Since moving to Mac OS X this computer (and its predecessor, a Power Mac G5) has had very close to 0% downtime. While running on the previous AppleShare IP server for many years, it had around 0.1% downtime (both figures exclude power cuts and restarts to activate system upgrades). All web and database services on this machine are fast and have never been affected in any way by viruses, worms or other security issues (I have been the victim of 1 security problem, but that was because a password was guessed, and even then the server continued running).
The HTML on this web site was entered using BBEdit, a Macintosh only text editor which is a great tool for creating efficient web sites. No WYSIWYG web creation tools, such as DreamWeaver or GoLive, were used. All JavaScipt and PHP code was entered directly into the text editor. This site is a result of careful design and craftsmanship!