I should really get into the habit of publishing those little tools I write. If they're useful to me, it's likely someone else could appreciate them, right?
They're not really packaged properly yet, but eventually will. Maybe.
debsummer will generate md5sums files for currently installed Debian packages by summing the installed files (as opposed to the contents of a .deb file). Options include ignoring world-unreadable files (e.g. to let unprivileged users run "debsums -s" to verify the md5sums), ignoring conffiles, and specifying an alternate directory to store the md5sums. Looks pretty stable, I've been using it for over a year. One known bug that needs to be fixed is that it is not currently aware of diversions.
keyparty is a tool to generate forms for PGP keysigning parties. The output is HTML. For each participating key, all UIDs are listed with checkboxes for marking them as "verified". A picture ID will be printed if one is present in the key. I've used it for two keysigning parties so far, and the result was well appreciated.
brk_patch is a quick attempt to write a module to patch the brk overflow present in <2.4.23 Linux kernels. It seems to work, but if this breaks anything, you get to keep the pieces -- I'm no kernel guru. Also, this only protects one potential attack vector, there are apparently others. Upgrading your kernel is a better idea.
uselib_patch is another quickly written module, this time to disable the uselib() syscall which is vulnerable in <2.4.29 Linux kernels (mostly because 2.4.29 is taking it's sweet time to come out despite this vulnerability). I don't have a single binary that requires uselib(), but you might, so again, you get to keep the pieces if anything breaks.