Michael Tiemann

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American executive, software developer, and open source proponent

title: "Michael Tiemann" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["free-software-programmers", "linux-people", "living-people", "year-of-birth-missing-(living-people)", "members-of-the-open-source-initiative-board-of-directors", "open-source-advocates", "red-hat-people", "university-of-pennsylvania-school-of-engineering-and-applied-science-alumni"] description: "American executive, software developer, and open source proponent" topic_path: "technology/operating-systems" source: "https://en.wikipedia.org/wiki/Michael_Tiemann" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary American executive, software developer, and open source proponent ::

::figure[src="https://upload.wikimedia.org/wikipedia/commons/f/f7/Michael_Tiemann.jpg" caption="Michael Tiemann at MySQL Conference 05 in 2005"] ::

Michael Tiemann is an American software developer and executive, who served as CTO at Red Hat and later vice-president of open source affairs beginning in 2004. He is also a former President of the Open Source Initiative.

Biography

He earned a bachelor's degree from the Moore School of Electrical Engineering in 1986 at the University of Pennsylvania.

He co-founded Cygnus Solutions in 1989 and sold it to Red Hat for $697 million in 1999. His programming contributions to free software include authorship of the GNU C++ compiler and work on the GNU C compiler and the GNU Debugger. Tiemann is featured in the 2001 documentary Revolution OS. Opensource.com profiled him in 2014, calling him one of "open source's great explainers."

He was the chief technical officer of Red Hat. He served on a number of boards, including the Embedded Linux Consortium, the GNOME Foundation advisory board, and the board of directors of ActiveState Tool Corp.

References

References

  1. (2000-01-12). "Red Hat Names Michael Tiemann Chief Technical Officer".
  2. "Michael Tiemann - METL Advisor".
  3. Tiemann, Michael. "Home page for Michael Tiemann".
  4. "Thank you, Michael Tiemann! | Open Source Initiative".
  5. "Interview with Red Hat Vice President, Open Source Affairs - Michael Tiemann".
  6. (September 27, 1993). "FORTUNE VISITS 25 COOL COMPANIES: What has the computer revolution done for us lately?".
  7. Tiemann, Michael. (March 29, 1999). "Open Sources: Voices from the Open Source Revolution".
  8. Staff, N. P. R.. (2012-10-29). "Want To Be Rich? Be Lucky, Know The Right People". NPR.
  9. Stallman, Richard M.. (February 1988). "GNUs Flashes, February 1988". GNU's Bulletin.
  10. "About". Revolution OS.
  11. Behrenshausen, Bryan. (August 5, 2014). "How to think like open source pioneer Michael Tiemann".
  12. "Red Hat Executive Team". Red Hat.
  13. (June 21, 2000). "Red Hat CTO Michael Tiemann Appointed to Embedded Linux Consortium Board of Directors". Red Hat.
  14. Veillard, Daniel. (2003-03-13). "Minutes of the GNOME Board meeting March 11 2003".
  15. (2000-09-25). "NY VC funds ActiveState". ActiveState.

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free-software-programmerslinux-peopleliving-peopleyear-of-birth-missing-(living-people)members-of-the-open-source-initiative-board-of-directorsopen-source-advocatesred-hat-peopleuniversity-of-pennsylvania-school-of-engineering-and-applied-science-alumni