I started "blogging" (I don't think the term had been invented yet) in December 1997, at the time when Linux and free software were starting to take of as credible alternatives to Unix and Windows NT for business IT. I stopped in October 1999, for reasons I don't remember.

After a few years off, I resumed blogging in 2005, with a focus on my business as a Python and Zope, then later Java, company, but also covering other subjects related to free / open source software, including software patents.

You can read these posts, most of them about companies and ideas that have either passed away, or are now considered mainstream, in the archives.

Op-eds and interviews

Technical White Papers and Booklets

I have authored or co-authored several white papers, including:

  • Modèles économiques du logiciel libre (2014) [PDF].

  • Logiciel libre pour les étudiants (2013) [PDF]

  • Big Data et Open Source: une convergence inévitable? (Big Data and Open Source: an inevitable convergence?). 2012. [PDF]

  • 10 raisons de choisir l'open source professionnel (10 reasons to choose professional open source). 2011. [PDF]

  • OpenOffice.org : l'avantage XML ! (OpenOffice.org: the XML advantage). 2004. [PDF]

I also wrote the forewords of the following booklets:

  • Open source pour l'IoT (2016) [PDF]

  • Fondamentaux juridiques du logiciel libre - Collaboration industrielle et innovation ouverte (2016) [PDF]

  • Logiciel libre pour la qualité logicielle (2014) [PDF]

Market Studies and Policy Papers

I have contributed to the following studies (wrote the whole or parts of the document, designed the study with the contractor...):

  • Report on the APELL Conference : The Future of Open Source Business in Europe (APELL, 2022) [PDF].

  • Formations et compétences Open Source en France (OPIIEC, 2021) [Link].

  • Une stratégie pour le numérique ouvert dans l’après-Covid 19 (CNLL, 2020) [PDF].

  • Réponse du CNLL à la consultation du Pacte Productif Numérique (CNLL, 2019) [PDF].

  • Open Source: a dynamic market fueled by digital transformation and innovation (PAC pour le CNLL, 2019) [PDF].

  • Grande enquête 2018: quelles perspectives pour le marché du travail dans l'open source? (Katalyse pour le CNLL, 2018) [PDF]

  • Impact du Logiciel Libre & Open Source en France 2017-2020 (PAC pour le CNLL, 2017) [PDF]

  • Impact du Logiciel Libre / Open Source Software en France 2015-2020 (PAC pour le CNLL, 2015) [PDF]

  • Contribution du groupe Logiciel Libre du pôle Systematic à l’appel pour le plan industriel Cloud (GTLL, 2013) [PDF]

  • 10 propositions pour une politique industrielle du logiciel libre (CNLL, 2012) [PDF]

Press Releases

I wrote or co-wrote most of the press releases for Nuxeo between 2000 and 2008. See the archive on LinuxPR for some examples (in English).

As the president of AFUL, the French-speaking Linux and Free Software Users Association, from 1998 to 2003, I wrote or co-wrote most the press releases during this period. See this list on the AFUL website.

Scientific Papers

I've published several scientific papers. According to Google Scholar, my h-index is 10 (256 citations).

Computer Science

I have written (or contributed to) a small number of scientific papers on computer science (more specifically, on software engineering and information management) since 1999:

  • Lessons learned developing the Nuxeo EP open source, component-based, ECM platform, ICSSEA 2010 Conference. [PDF].

  • Nuxeo CPS: an open source framework for the development of enterprise content management and collaboration applications, Proceedings of the 2005 EuroPython conference. [PDF].

  • EDOS: Environment for the Development and Distribution of Open Source Software, 2005. [PDF]

  • Le moteur de recherche FermiVista!, in L'information scientifique et l'outil Internet, Le Micro Bulletin Thématique, CNRS, 1999. [PDF]


I started my career as a mathematician. Here is the list of my publications, from 1991 to 1999:

  • Leprévost, Franck - Sur certaines surfaces elliptiques et courbes elliptiques de Mordell de rang ≥1 associées à des discriminants de polynômes cubiques ou quartiques. (French) [Certain elliptic surfaces and Mordell elliptic surfaces of rank ≥1 associated with discriminants of cubic or quartic polynomials] With an appendix by Stefane Fermigier, Claus Fieker and the author. J. Number Theory 78 (1999), no. 1, 149–165.

  • Fermigier, Stéfane - Une courbe elliptique définie sur Q de rang ≥22. (French) [An elliptic curve defined over Q of rank ≥22] Acta Arith. 82 (1997), no. 4, 359–363.

  • Fermigier, Stéfane - Construction of high-rank elliptic curves over Q and Q(t) with non-trivial 2-torsion (extended abstract). Algorithmic number theory (Talence, 1996), 115–120, Lecture Notes in Comput. Sci., 1122, Springer, Berlin, 1996

  • Fermigier, Stéfane - Étude expérimentale du rang de familles de courbes elliptiques sur Q. (French) [Experimental study of the rank of families of elliptic curves over Q] Experiment. Math. 5 (1996), no. 2, 119–130.

  • Fermigier, Stéfane - Annulation de la cohomologie cuspidale de sous-groupes de congruence de GLn(Z). (French) [Vanishing of the cuspidal cohomology of congruence subgroups of GLn(Z)] Math. Ann. 306 (1996), no. 2, 247–256.

  • Fermigier, Stéfane - Exemples de courbes elliptiques de grand rang sur Q(t) et sur Q possédant des points d'ordre 2. (French) [Construction of high-rank elliptic curves over Q(t) and Q with nontrivial 2-torsion] C. R. Acad. Sci. Paris Sér. I Math. 322 (1996), no. 10, 949–957.

  • Fermigier, Stéfane - Zéros des fonctions L de courbes elliptiques. (French) [Zeros of L-functions of elliptic curves] Experiment. Math. 1 (1992), no. 2, 167–173.

  • Fermigier, Stéfane - Un exemple de courbe elliptique définie sur Q de rang ≥19. (French) [An example of an elliptic curve defined over Q with rank ≥19] C. R. Acad. Sci. Paris Sér. I Math. 315 (1992), no. 6, 719–722.

  • Cherbonnier, Frédéric; Fermigier, Stéfane. - Codes correcteurs d'erreurs. (French) [Error-correcting codes] Gaz. Math. No. 48 (1991), 65–76.

My publication list on MathSciNet: http://www.ams.org/mathscinet/search/publications.html?pg1=IID&s1=328067


I wrote the prefaces for two programming books about Python:

  • Tarek Ziadé - Programmation Python. Eyrolles, Paris, 2006. ISBN: 2-212-11677-2. [Amazon].

  • Gérard Swinnen - Apprendre à programmer avec Python. Second edition. O'Reilly France, Paris, 2005. ISBN: 2-841-77299-3. [Amazon]

Back in the 90s, I co-wrote three undergraduate level mathematics books, with my friends Antoine Chambert-Loir and Vincent Maillot:

  • Chambert-Loir, Antoine; Fermigier, Stéfane; Maillot, Vincent - Exercices de mathématiques pour l'agrégation. (French) [Mathematics exercises for the Agrégation] Analyse 1. [Analysis 1] Second edition. Agrégation de Mathématiques. Masson, Paris, 1997. ISBN: 2-225-85516-1. [Amazon].

  • Chambert-Loir, Antoine; Fermigier, Stéfane - Exercices de mathématiques pour l'agrégation. (French) [Mathematics exercises for the Agrégation] Analyse 2. [Analysis 2] Second edition. Agrégation de Mathématiques. Masson, Paris, 1997. ISBN: 2-225-84885-8. [Amazon].

  • Chambert-Loir, Antoine; Fermigier, Stéfane - Exercices de mathématiques pour l'agrégation. (French) [Mathematics exercises for the Agrégation] Analyse 3. [Analysis 3] Second edition. Agrégation de Mathématiques. Masson, Paris, 1997. ISBN: 2-225-85385-1. [Amazon].


See this section.