I've ported Sergey Nosenko's pie chart hacks to Flot forward to flot-0.5. You can look at the patch or just grab the modified source
A "native" MySQL driver for Haskell's HDBC database interface. (I'm no longer maintaining this; Bryan O'Sullivan has kindly taken it over. Here is the old page, if you should need it for some reason.)
For an operating systems class in grad school, me and a few others
worked on a
log-structured file system.
We sorta faked it back then, writing a Java "simulator". I got
bored at work a few years back, and tried to actually implement
the stuff a Linux filesystem on 2.0.31; this is that attempt. It
works, kind of, but is probably fairly irrelevant in the modern
world of ext3 and
LinLogFS.
But who knows, maybe you'll think it's cool.