I was interested in software since the late 1980s and started programming in 1991. I am a professional software developer with a degree in computer since since 2004. Since the late 1990s I'm mostly focusing on the web platform.

The following pages list software I either coded myself or contributed to. Some more software I made can be found on the website of my demoscene group TAP. Source codes are usually included in the downloads. I'm usually licensing my own software under the terms of CC-BY-SA, if not stated otherwise.

Personal software projects, in chronological order:

  • II99 Forum, written in Perl.
  • offen-siv web platform for students.
  • Auto-Formatter.

Web designs I made as well as web sites I build and maintained are listed in the references section. Smaller PHP libraries are listed in the PHP section.

Paid work

Software projects worth mentioning I build or was involved in as a paid software developer, in chronological order:

  • 2002–2004: Fragebogen.
  • 2003–2004: Studi-Datenbank.
  • 2003–2005: Einschreibelisten.
  • 2004: Öffnungszeiten.
  • 2004: BusinessGraph library.
  • 2004–2005: Thermopr@ctice.
  • 2005–2009: Windows Mobile interfaces for production data acquisition.
  • 2009–2011: UltraMixer.
  • 2011–2014: InconsoWMS is a warehouse management system written in Java, heavily utilizing the features of the Oracle database management system.
  • Since 2014: Wikibase is a MediaWiki extension developed by Wikimedia Deutschland.