Sometimes I write software which I think is worth making public. Such software I put on my GitHub page. Additionally, I like to contribute to free software, but I don’t keep a list of my contributions. Mostly, searching for my name or e-mail address gives a reasonable impression of my activities.
At the Universiteit van Amsterdam a site with my academic profile is available.
At times I am very satisfied with my thoughts. Those thoughts, however, never get transformed into a weblog. I made an attempt at maintaining a journal of my experiments in home automation around the end of 2007, but did not make it past three entries.