I enjoy trying out ideas for web applications and see how it goes.

Bandnews (2004/05), collecting news from the (at the time crazily bad) band websites with a bot.

Blummy (since 2005), in-browser dropdown window for your collection of bookmarklets.

Computerlexikon (since 1999), Fachbegriffe verständlich erklärt. A german computer dictionary.

Colorillo (since 2009), collaborative drawing in the browser.

Conota (since 2014), work in progress. peer review facts.

Factolex (since 2007), create your own encyclopedia.

podmash (since 2012), mix different podcast episodes into a feed of your own, see my feed at

report a problem (since 2010), a small script that you can drop into your web page and get a in-page feedback form, aimed at getting useful response: what did you want to do? but what happened?

thinkery (since 2011), your brain, organized.

Wizlite (2006), a highlighting marker for the web.

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