Luapress is yet another static site generator, written in Lua, with posts in markdown. It's simple, fast and supports both plugins and templates.
Install with Luarocks:
luarocks install luapress
Create a new site in some directory (you can optionally specify --lhtml to use the LHTML default template over the mustache one):
luapress init URL [--lhtml]
Drop Markdown files in posts/ & pages/ and build with:
luapress
Now, just upload the contents of build/ to the web.
Luapress offers many other features, which are documented on it's website:
I'm using it for my blog, Pointless Ramblings. The Luapress website itself is also powered by Luapress :).