I use HTML directly, with a small custom-made wrapper so all I write is the main content itself, not the head element or the visible footer. Some scripts to build the index page, the tags page, the categories page. Hosted on GitHub, but it would work just as well on my own domain. I made some stylesheets for fun, the default is deliberately minimalistic.
I've found I have so few readers I don't really need a comment section, so I've not even implemented one.