mek.lu is a URL shortener which is powered by a specialized HTTP server written in C.
mekfont-logotype is my logotype font and can be found in use even on this very page! The heading above is one example thereof. Eagle-eyed spectators may also notice something funny in the copyleft notice in the bottom of the page. There may also be something curious going on on the main page of the site itself.
It's available on GitHub and includes a nice little generator written in Haskell that turns the set of glyphs into an SVG font. There's also a build tool dependent on FontForge that can convert it to more commonly usable formats.
meksysinfo is a system information script that shows a nicely formatted summary of the system it's run on.
rbt_prs is a robots.txt parser that could be useful if you want to respect others when making your bot. It's written in PHP and doesn't have any external dependencies. Note: fopen() should be allowed to download things.