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Benevolent dictator for life

Title given to a small number of open-source software development leaders


Summary

Title given to a small number of open-source software development leaders

Benevolent dictator for life (BDFL) is a tongue-in-cheek title given to a small number of open-source software development leaders, typically project founders who retain the final say in disputes or arguments within the community. It was first used in 1995 for Guido van Rossum, the creator of the Python programming language.

History

Shortly after Van Rossum joined the Corporation for National Research Initiatives, the term appeared in a follow-up mail by Ken Manheimer to a meeting trying to create a semi-formal group that would oversee Python development and workshops; this initial use included an additional joke of naming Van Rossum the "First Interim BDFL". The title was initially coined as "Benevolent Dictator" by Ken Manheimer; later Barry Warsaw suggested it would be "Benevolent Dictator for Life".

In July 2018, van Rossum announced that he would be stepping down as BDFL of Python without appointing a successor, effectively eliminating the title within the Python community structure. That remains an unusual move. In 2025, Mastodon developer Eugen Rochko stepped down, transferring ownership to a non-profit structure.

Usage

BDFL should not be confused with the more common term for open-source leaders, "benevolent dictator", which was popularized by Eric S. Raymond's essay "Homesteading the Noosphere" (1999).

Among other topics related to hacker culture, Raymond elaborates on how the nature of open source forces the "dictatorship" to keep itself benevolent, since a strong disagreement can lead to the forking of the project under the rule of new leaders. Most open source software development projects utilize distributed version control systems, in which contributors submit pull requests to the project's maintainer, who may merge or reject the submission. Other distributed copies of the software are then based on that maintainer's repo. The position of BDFL is a consequence of network effect; they become stewards of the overall project on account of being the repo that the rest of the community is subscribed to and submits changes to.

Referent candidates

Deceased
NameProjectType
Sylvain BennerSpacemacsCommunity-driven Emacs distribution
Vitalik ButerinEthereumBlockchain-based cryptocurrency
Dries BuytaertDrupalContent management framework
François CholletKerasDeep learning framework
Evan CzaplickiElmFront-end web programming language
Laurent DestailleurDolibarr ERP CRMSoftware suite for enterprise resource planning and customer relationship management
David Heinemeier HanssonRuby on RailsWeb framework
Rich HickeyClojureProgramming language
Adrian Holovaty
and Jacob Kaplan-MossDjangoWeb framework
Andrew KelleyZigProgramming language
Xavier LeroyOCamlProgramming language
Haoyuan LiAlluxioData Orchestration System
Miles LubinJuMPMathematical optimization modeling language in Julia
Yukihiro Matsumoto (Matz)RubyProgramming language
Wes McKinneyPandasPython data analysis library
Gavin Mendel-GleasonTerminusDBOpen-source graph database for knowledge graph representation
Bram MoolenaarVimText editor
Matt MullenwegWordPressContent management framework
Martin OderskyScalaProgramming language
Taylor OtwellLaravelWeb framework
Theo de RaadtOpenBSDA Unix-like operating system
Arnold RobbinsAwk, GawkProgramming language
Ton RoosendaalBlender3D computer graphics software
Sébastien RosOrchard ProjectContent management system
Mark ShuttleworthUbuntuLinux distribution
Jeremy SollerRedoxOperating system
Don SymeF#Programming language
Linus TorvaldsLinuxOperating system kernel
José ValimElixirProgramming language
Pauli VirtanenSciPyPython library used for scientific and technical computing
Patrick VolkerdingSlackwareGNU/Linux distribution
Nathan VoxlandLiquibaseDatabase schema management
Jimmy WalesWikimedia FoundationCollaborative knowledge project
Jeremy WalkerExercismOpen-source programming education platform
Shaun WalkerDotNetNukeWeb application framework
Larry WallPerlProgramming language
Evan YouVue.jsJavaScript MVVM framework for building user interfaces and single-page applications.
Soumith ChintalaPyTorchDeep learning framework
Martin Traverso, Dain Sundstrom, David PhillipsTrinoSQL query engine
Kohsuke KawaguchiJenkinsAutomation server
Gabor de MooijRedBeanPHPDatabase object relational mapper
Bram CohenBitTorrentPeer-to-peer file sharing protocol
Walter BrightD (programming language)Programming language
Ritchie VinkPolarsData analysis framework
William FalconPyTorch LightningDeep learning framework
Lars HvamabapGitGit client for ABAP
Sebastián RamírezFastAPIWeb framework for building APIs with Python
Bill Hall (gingerBill)OdinProgramming language
Damien Elmes (dae)AnkiSpaced repetition system
Ryan CramerProcessWireFree content management system (CMS) and framework (CMF)
Salvatore SanfilippoRedisIn memory key-value database

Organizational positions

References

References

  1. Guido van Rossum. (2008-07-31). "Origin of BDFL". Artima.com.
  2. . (2006-03-06). ["Python Creator Scripts Inside Google"](http://www.eweek.com/c/a/Application-Development/Python-Creator-Scripts-Inside-Google/).
  3. CultRepo (formerly Honeypot). (2025-08-28). "Python: The Documentary {{!}} An origin story".
  4. Perez, Sarah. (2025-11-18). "Mastodon CEO steps down as the social network restructures".
  5. Raymond, Eric S.. (2000). "Homesteading the Noosphere § Project Structures and Ownership".
  6. "Spacemacs COMMUNITY.org".
  7. (24 April 2017). "Ethereum's Boy King Is Thinking About Giving Up the Mantle". Vice.
  8. "How Do Open Source Communities Govern Themselves? {{!}} RandyFay.comties Govern Themselves?".
  9. (December 21, 2021). "Keras API Special Interest Group, Leadership".
  10. "56: Ember vs. Elm: The Showdown with Philip Poots {{!}} The Frontside Podcast".
  11. elm-conf. (2016-09-19). ""Code is the Easy Part" by Evan Czaplicki".
  12. "Dolibarr project organization, different roles of actors".
  13. Constine, Josh. (December 7, 2012). "Dropbox Hires Away Google's Guido Van Rossum, The Father Of Python". TechCrunch.
  14. "Clojure JIRA Workflow".
  15. (January 12, 2014). "Adrian and Jacob retiring as Django BDFLs". Adrian Holovaty.
  16. "Proposal: Create a standard process for proposals.".
  17. (December 10, 2021). "Interfacing with Zig, a BDFL-run Project".
  18. "A History of OCaml {{!}} OCaml.org".
  19. "OCaml Infrastructure mailing list".
  20. Introducing Alluxio Open Source Project Governance "[https://www.alluxio.io/blog/introducing-alluxio-open-source-project-governance/]"
  21. "Governance Structure: JuMP".
  22. "A Ruby Design Process".
  23. "pandas 0.20.3 documentation: Tutorials".
  24. (May 6, 2020). "TerminusDB, Twitter".
  25. (August 21, 2019). "TerminusDB — what's in a name?". TerminusDB.
  26. (January 15, 2015). "Why Neovim is Better than Vim".
  27. (July 24, 2015). "Thesis, Automattic, and WordPress {{!}} Post Status".
  28. "Programming in Scala Leaps onto the World Stage!".
  29. (October 9, 2014). "Taylor Otwell, Twitter". Taylor Otwell.
  30. (August 5, 2014). "Taylor Otwell, Creator of the Laravel PHP Framework".
  31. Robbins, Arnold. (March 2014). "The GNU Project and Me: 27 Years with GNU AWK".
  32. "Developer Intro/Overview".
  33. "Orchard Project Steering Committee".
  34. "Ubuntu carves niche in Linux landscape". [[CNET]].
  35. (July 8, 2023). "CONTRIBUTING.md · master · redox-os / redox".
  36. "Contributing to the F# Language and Compiler".
  37. Dee-Ann LeBlanc. (31 July 2006). "Linux For Dummies". John Wiley & Sons.
  38. "Elixir Companies".
  39. "SciPy 1.0.0".
  40. "SciPy project governance".
  41. "Stories of Linux: A Look at Slackware Linux". [[linux.com]].
  42. "User and Developer Community {{!}} Post Status".
  43. (June 27, 2013). "Jimmy Wales is Not an Internet Billionaire". The New York Times.
  44. "Jeremy Walker on Being the BDFL of Exercism by Humans of Open Source • A podcast on Anchor".
  45. Book: Building Websites with DotNetNuke 5, Michael Washington and Ian Lackey, Packt Publishing. Page 14 "The core team comprises individuals invited to join the team by Shaun Walker, whom they affectionately call the "Benevolent Dictator".
  46. "The Art of Ballistic Programming".
  47. "PyTorch Governance {{!}} Maintainers — PyTorch 2.0 documentation".
  48. Trino and the BDFL model https://trino.io/blog/2023/04/06/trino-bdfl-focus.html
  49. Jenkins Enhancement Proposal #1: BDFL https://github.com/jenkinsci/jep/blob/master/jep/1/README.adoc#bdfl
  50. RedBeanPHP index page https://redbeanphp.com/index.php?p=/welcome#sponsor
  51. BitTorrent Enhancement Proposal #1: The BEP Process https://www.bittorrent.org/beps/bep_0001.html
  52. (2024-04-07). "Polars - About us".
  53. "Lightning Governance — PyTorch Lightning 2.3.0dev documentation".
  54. (2024-06-06). "Addressing the Future of ABAP: The Power of Open Source".
  55. (2024-07-30). "GitHub FastAPI".
  56. (2019-03-31). "Proposal Process".
  57. "ankitects Github organization".
  58. "Anki development discussion".
  59. ProcessWire index page https://www.processwire.com/
  60. Antirez Redis repository https://github.com/antirez/redis
  61. Van Rossum, Guido. (July 12, 2018). "Transfer of power".
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