The Millenium was one week old…
Here’s a selection of 25 years of Open Source consulting and coaching. Scroll down for the most recent highlights or jump to one of the past years:
Feilner IT was founded on January 7, 2000, in Regensburg, by Markus Feilner. The senior Linux expert had been gathering Linux experience and had been doing services for customers like the Regensburg university since 1994.
Feilner-IT quickly grew to a sustainable company based on open source and journalism. Learn more about Markus in his profile (PDF: English and German).
Markus has written books, helped customers and partners in politics, industry, education and public administration. On top of all that, for 10 years, he was deputy editor-in-chief of the german Linux-Magazin, Team Lead documentation at SUSE Linux (where he helped to build a documentation team from 5 to 16 members). Since 2019, Markus has been acting as an open source business angel (“ambassador”), developing the concept of agile recursive documentation, on-boarding and open source leadership.
News and Recent Highlights from 2025
Case Study in April 2025: Lasers in the micrometer range: OpenProject at 3D-Micromac in Chemnitz
For the the Golem newsletter,
“Chefs von Devs,” in March 2025, Markus Feilner interviews CTO Markus Glaser and CEO Richard Heigl of Regensburg-based Hallo Welt! GmbH who explain what the developer of the open-source knowledge management system Bluespice has learned from integrating accessibility into its web application, and what other software developers should pay attention to and focus on as they prepare for the BFSG.
Also in March 2025, Markus wrote about how Open Source was built into NASA from the start and how it came to be.
Markus wrote about the relationship of Open Source and the European Space Agency (ESA), with insight ranging from the history to today for Linux Magazin, March 2025.
Markus dives into the concept of TESCREAL (Transhumanism, Extropianism, Singularitarianism, (modern) Cosmism, Rationalist ideology, Effective Altruism, and Longtermism) and the danger to democracy for Golem, February 2025.
To start off 2025, Markus wrote ZenDIS, openDesk, and openCode: How Germany is transforming their public sector with open source for All Things Open.
