Blogaria: a collection of snippets that I can't find any other spot for.
Bored section: random pictures taken by mobile phone whilst having nothing better to do.
BSgen is a bs generator for corporate e-mail memo's.
Cookies are random witty quotes that I've schlepped around with me for quite some while. You can see my collection of cookies, a Unix cookie program, and a few tips on how to use all this, in the cookie section.
CopyForward is a simple Perl script to copy files, but not to overwrite newer ones. I use this on systems where "cp" doesn't support the flag "-n" (for newer). See the page obout cpf.
Cyclic Log is a package of commandline tools and a C++ API for "cyclic logs" that don't grow.
Dial Whatever: incase you wonder whether there's a nifty nerdy word hidden in your phone number.
DNS Balancer: my prototype of a UDP service balancer, in this case for DNS requests. Just to show it can be done.
FCH was my first useful C program ever.
HammerServer is "a networked process where arbitrary data are stored and can be retrieved. The server makes sure that data tampering (e.g., by a malevolent database administrator) is detected. Hence, the HammerServer provides ``tamper-resistance''. The next step in security would be probably a tamper-free log - which is very hard to achieve and involves specialized hardware.". Here's a Perl implementation, w/docs.
Jpeginfo: a tiny tool in C to show information about jpeg images.
Kalk is a C-like calculator that I still use.
Lectures are presentations of some of my lectures. Downloadable in PDF format.
Microproxy is my tiny C++ proxy for http and https.
Nasa Pics is a collection of cherished astronomy images.
PGP Key lists my public PGP key and fingerprint, incase you want to mail me and wish to use a 'sealed envelope'.
SafeEdit is yet-another-tiny-Perl-script that I use for -- yes, safe editing. Read the description.
Wallpapers are some of my desktop photos that brighten up my lappie.

Offsite material:

e-tunity is a Dutch ICT company, of which I'm co-founder (www.e-tunity.com).
Crossroads is my pet project, a level5 TCP balancer / failover utility. It also does fancy tricks for the HTTP protocol (level7). Check out --
- crossroads.e-tunity.com, the primary site
- freshmeat.net/projects/crossr, the project page on Freshmeat
e-tunity's publicly available software, largely written by me, is featured on public.e-tunity.com
Easy SVN Viewer, one of the packages at public.e-tunity.com, also has its separate project page on freshmeat. It allows one to set up a web-based Subversion repository browser really quick, via just one cgi-based Perl script that handles all.
Notes on networking and daemons are featured on http://lectures.kubat.nl/2007-c/. These notes serve as reference material for my guest lectures at the State Univ. of Groningen, 2007.