1. python/cpython

1. python/peps
2. microsoft/vscode-python
3. brettcannon/python-launcher
4. microsoft/vscode-jupyter
5. brettcannon/caniusepython3
6. python/devguide
7. microsoft/Pyjion
8. gidgethub/gidgethub
9. brettcannon/oplop
10. brettcannon/desugar
11. brettcannon/dotconfig
12. python/the-knights-who-say-ni
13. brettcannon/dotfiles
14. pypa/packaging
15. brettcannon/free-labour
16. brettcannon/travelbrag
17. Which-Film/which-film.info

1. brettcannon/mousebender
2. microsoft/pvscbot
3. python/importlib_resources
4. PyCQA/modernize
5. brettcannon/release-often
6. python/bedevere
7. python/devinabox
8. brettcannon/WWBD
9. brettcannon/microvenv
10. brettcannon/trips-history
11. brettcannon/pep425
12. brettcannon/check-for-changed-files
13. pypa/packaging.python.org
14. brettcannon/py-pip
15. brettcannon/cpython-wasi-build
16. brettcannon/python-azure-web-app-cookiecutter
17. brettcannon/stdlib-stats
18. brettcannon/mnfy
19. microsoft/vscode-docs-archive
20. dabeaz/curio
21. brettcannon/sans-io
22. microsoft/vscode-docs
23. brettcannon/modutil
24. brettcannon/time-clock
25. brettcannon/flatten_filenames
26. elixir-lang/elixir-lang.github.com
27. brettcannon/find-duplicate-files
28. brettcannon/riscv-harmony
29. uranusjr/packaging-metadata-comparisons
30. brettcannon/basicenum
31. angular/angular.js
32. pypa/setuptools
33. python-trio/trio
34. dusty-phillips/rescript-zora
35. microsoft/vscode-dev-containers
36. python/core-workflow
37. Azure-Samples/Azure-MachineLearning-DataScience
38. microsoft/vscode-python-devicesimulator
39. brettcannon/record-type
40. brettcannon/pip-secure-install
41. Azure/msrest-for-python
42. emmatyping/python-wasm
43. microsoft/TypeScript-Handbook
44. Azure/msrestazure-for-python
45. python-hyper/uritemplate
46. pypa/distutils
47. python/buildmaster-config
48. brettcannon/defy-layout-scorer
49. orsenthil/cpython-hg-to-git
50. python-hglib

1. benjaminp/six
2. python3statement/python3statement.github.io
3. brettcannon/importlib
4. brettcannon/choose-a-font.dev
5. python/steering-council
6. beeware/toga
7. JuliaLang/julia
8. dusty-phillips/match-variant
9. rescript-lang/rescript-lang.org
10. lustre-labs/lustre
11. microsoft/vscode-telemetry-extractor
12. microsoft/vscode-anaconda-extension-pack
13. eclipse-archived/ceylon-lang.org
14. brettcannon/nowhere-on-the-web
15. python/blurb
16. python/cherry-picker
17. brettcannon/porting-to-python-3-notebook
18. Azure/azure-sdk-for-python
19. python/cpython-devcontainers
20. openlawlibrary/pygls
21. micktwomey/pyiso8601
22. rust-lang/rust
23. microsoft/vscode
24. python/planet
25. python/typeshed
26. WebAssembly/design
27. aosabook/500lines
28. brettcannon/vscode-zephyr-asdl
29. pypa/pipenv
30. square/dagger
31. cookiecutter/cookiecutter
32. Homebrew/legacy-homebrew
33. github/gitignore
34. Homebrew/homebrew-core
35. jazzband/pip-tools
36. microsoft/vscode-wiki
37. thechangelog/show-notes
38. sarugaku/resolvelib
39. dotnet/docs
40. brettcannon/cpython-wasi-buildbot
41. python/psf-salt
42. vstinner/misc
43. inko-lang/inko
44. micropython/micropython
45. Mariatta/github-bot-tutorial
46. badges/shields
47. asyncio-docs/asyncio-doc
48. python/pythonineducation.org
49. python-hyper/h2
50. MeeseeksBox/meeseeksbox.github.io
51. python/python-docs-theme
52. python/core-sprint
53. microsoft/language-server-protocol
54. gleam-lang/otp
55. progit/progit2
56. python/typing
57. pypa/flit
58. astral-sh/ruff
59. microsoft/vscode-python-templates
60. larryhastings/appeal
61. wntrblm/nox
62. microsoft/sql-server-samples
63. beeware/beeware.github.io
64. rustwasm/book
65. aio-libs/aiohttp
66. microsoft/TypeScript-wiki
67. buildout/buildout
68. matplotlib/matplotlib
69. microsoft/vscode-isort
70. conda/conda
71. bytecodealliance/wasmtime
72. fastapi/sqlmodel
73. vibora-io/vibora
74. moby/mobywebsite
75. MicrosoftDocs/visualstudio-docs
76. WebAssembly/wasi-sdk
77. microsoftarchive/msgraph-sdk-python
78. jaraco/skeleton
79. kushaldas/pep582
80. riverscuomo/apps
81. ponylang/pony-tutorial
82. microsoft/vscode-docker
83. huggingface/agents-course
84. python/pyperformance
85. beeware/liquid-demo
86. bloodyowl/rescript-test
87. kushaldas/pym
88. dabeaz/ply
89. gleam-lang/language-tour
90. pyscript/pyscript
91. MPOS/php-mpos
92. conda/ceps
93. Django
94. conda/conda-build
95. bungcip/better-toml
96. riscv-software-src/riscv-tests
97. markshannon/faster-cpython
98. devcontainers/features
99. Devid-Ba/Text-adventure
100. lorenzofox3/zora
101. python-poetry/tomlkit
102. stellar-deprecated/docs
103. reubeno/brush
104. gleam-lang/erlang
105. microsoftgraph/microsoft-graph-docs-contrib
106. microsoft/vscode-pylint
107. Quansight-Labs/free-threaded-compatibility
108. pypi/warehouse
109. clearlydefined/website
110. livebook-dev/livebook
111. actions-rs/install
112. chhantyal/py3readiness
113. topazproject/topaz
114. GraphQLGuide/book
115. rust-lang/log
116. bagder/http2-explained
117. realpython/python-guide
118. microsoft/vscode-tools-for-ai
119. facebook/pyre-check
120. psf/webassembly
121. twisted/klein
122. ericpalakovichcarr/pytest-pythonpath
123. rust-lang/rustfmt
124. psf/fundable-packaging-improvements
125. w3c/ServiceWorker
126. bitbldr/sprocket_docs
127. stellar/new-docs
128. okken/pytest-srcpaths
129. oauthlib/oauthlib
130. microsoft/PTVS
131. pycascades/welcome-wagon-2018
132. briandealwis/ferret
133. gitkraken/vscode-gitlens
134. victor-o-silva/python-links-from-link-header
135. gleam-lang/gleam
136. casey/just
137. Fyrd/caniuse
138. vega/ipyvega
139. jupyterlab/jupyterlab
140. pypa/trove-classifiers
141. gleam-lang/website
142. mozilla-services/konfig
143. lustre-labs/ui
144. kushaldas/asaman
145. luabud/hello-vscodespaces
146. python/importlib_metadata
147. WebAssembly/component-model
148. scikit-learn/scikit-learn
149. google/grumpy
150. microsoftgraph/python-sample-pagination
151. spotify/pedalboard
152. conda/conda-docs
153. python/pythontestdotnet
154. Homebrew/brew
155. diogonfs/pyinit
156. riverscuomo/new-albums
157. PyCQA/pyflakes
158. MicrosoftDocs/azure-docs
159. Lukasa/language-restructuredtext
160. ansible/ansible
161. nayafia/nayafia
162. dotnet/aspire
163. Azure/azure-cli
164. regebro/supporting-python-3
165. jupyter/jupyter.github.io
166. MagicStack/MagicPython
167. lpil/sqlight
168. aurelia/documentation
169. starship/starship
170. google/yapf
171. beeware/podium
172. python/mypy
173. syl20bnr/spacemacs
174. devcontainers/images
175. saschpe/mozilla-plugins
176. psf/black
177. hynek/build-and-inspect-python-package
178. brettcannon/character-frequency
179. cardoe/stderrlog-rs
180. cometkim/rescript-vitest
181. adafruit/Adafruit_CircuitPython_CircuitPlayground
182. score-spec/spec
183. pyvideo/data
184. mesonbuild/meson
185. microsoft/python-sample-vscode-django-tutorial
186. pablogsal/cpython_leaderboard
187. astral-sh/uv
188. Azure/azure-cosmos-python
189. vscode-restructuredtext/vscode-restructuredtext
190. Enderchief/gleam-tools
191. pypa/build
192. golang/go
193. pdm-project/pdm
194. rocketreach/rocketreach_python
195. zwaldowski/match-label-action
196. ebkalderon/tower-lsp
197. beeware/briefcase
198. pyvideo/old-pyvideo
199. VSCodeVim/Vim
200. modelcontextprotocol/rust-sdk
201. brettcannon/exercism-solutions
202. microsoft/debugpy
203. pypa/setuptools-scm
204. absurdia/absurdia-py
205. jupyter-book/mystmd.org
206. microsoft/vscode-extension-samples
207. pytest-dev/pytest
208. getsentry/responses
209. 11ty/11ty-website
210. dusty-phillips/macabre
211. microsoft/az-partner-center-cli
212. stellar/awesome-stellar
213. pypa/pipx
214. sphinx-doc/sphinx
215. Azure/azure-functions-python-library
216. palantir/python-language-server
217. extism/extism
218. jupyter/notebook
219. pyca/pyopenssl
220. PyPy
221. defusedexpat
222. expat
223. Mercurial
224. vim
225. smol

(Listed from oldest to newest, although I may have become a co-author post-creation.)

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2. Guido van Rossum (49)
3. Barry Warsaw (41)
4. Victor Stinner (34)
5. Brett Cannon (33)
6. Donald Stufft (21)
7. Petr Viktorin (20)
8. Martin von Löwis (17)
9. Łukasz Langa (15)
10. Nathaniel J. Smith (15)
11. Steve Dower (15)
12. Raymond Hettinger (14)
13. Antoine Pitrou (13)
14. Mark Shannon (12)
15. Eric Snow (12)
16. Georg Brandl (11)
17. Tim Peters (10)
18. A.M. Kuchling (10)
19. Marc-André Lemburg (9)
20. Paul Moore (9)
21. Yury Selivanov (8)
22. Larry Hastings (8)
23. Christian Heimes (8)
24. Ivan Levkivskyi (8)
25. Pradyun Gedam (8)
26. Ee Durbin (8)
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29. Moshe Zadka (7)
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31. Dustin Ingram (7)
32. Pablo Galindo (7)
33. Jelle Zijlstra (7)
34. William Woodruff (7)
35. David Goodger (6)
36. Ka-Ping Yee (6)
37. Jim J. Jewett (6)
38. Phillip J. Eby (6)
39. Daniel Holth (6)
40. Chris Angelico (6)
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42. Brandt Bucher (6)
43. Pablo Galindo Salgado (6)
44. Tzu-ping Chung (6)
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48. Skip Montanaro (5)
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56. Richard Jones (4)
57. Tarek Ziadé (4)
58. Carl Meyer (4)
59. Jukka Lehtosalo (4)
60. Thomas Kluyver (4)
61. Jeroen Demeyer (4)
62. Mariatta (4)
63. Lysandros Nikolaou (4)
64. Ofek Lev (4)
65. Pradeep Kumar Srinivasan (4)
66. Travis Oliphant (3)
67. Michel Pelletier (3)
68. Alex Martelli (3)
69. Michael Hudson (3)
70. Neal Norwitz (3)
71. Steven Bethard (3)
72. Armin Ronacher (3)
73. Carol Willing (3)
74. Eli Bendersky (3)
75. Eric V. Smith (3)
76. Steven D'Aprano (3)
77. Jeffrey Yasskin (3)
78. Batuhan Taskaya (3)
79. Filipe Laíns (3)
80. Erlend Egeberg Aasland (3)
81. James Hilton-Balfe (3)
82. Zac Hatfield-Dodds (3)
83. Shantanu Jain (3)
84. Sergey B Kirpichev (3)
85. Gregory P. Smith (3)
86. Facundo Tuesca (3)
87. Hugo van Kemenade (3)
88. Ewa Jodlowska (3)
89. Aahz (2)
90. Oleg Broytman (2)
91. Fred L. Drake (2)
92. Jr. (2)
93. David Ascher (2)
94. Greg Wilson (2)
95. Gordon McMillan (2)
96. Christopher A. Craig (2)
97. Clark C. Evans (2)
98. Greg Stein (2)
99. Magnus Lie Hetland (2)
100. Jack Jansen (2)
101. Vinay Sajip (2)
102. Mark Hammond (2)
103. Josiah Carlson (2)
104. Terry Reedy (2)
105. Facundo Batista (2)
106. Ben Finney (2)
107. Calvin Spealman (2)
108. Tim Delaney (2)
109. Jesse Noller (2)
110. Stephen J. Turnbull (2)
111. Dirkjan Ochtman (2)
112. Miro Hrončok (2)
113. Cameron Simpson (2)
114. Alex Gaynor (2)
115. Ronald Oussoren (2)
116. Trishank Karthik Kuppusamy (2)
117. Vladimir Diaz (2)
118. Marina Moore (2)
119. Justin Cappos (2)
120. Stefano Borini (2)
121. Stefan Behnel (2)
122. Ned Deily (2)
123. Alexander Belopolsky (2)
124. Nick Humrich (2)
125. Mark E. Haase (2)
126. Robert Collins (2)
127. Koos Zevenhoven (2)
128. Cory Benfield (2)
129. Marcel Plch (2)
130. Mario Corchero (2)
131. Geoffrey Thomas (2)
132. Maggie Moss (2)
133. Stéphane Bidoul (2)
134. Mark Mendoza (2)
135. Shannon Zhu (2)
136. Paul Ganssle (2)
137. Daniel F Moisset (2)
138. Tobias Kohn (2)
139. David Foster (2)
140. Tal Einat (2)
141. Adam Turner (2)
142. Steven Troxler (2)
143. Stan Ulbrych (2)
144. Erik De Bonte (2)
145. Sam Gross (2)
146. Ralf Gommers (2)
147. Savannah Ostrowski (2)
148. Hood Chatham (2)
149. Daniel Stutzbach (2)
150. Joe Carey (2)
151. Martijn Faassen (1)
152. The Python core team and community (1)
153. Paul Barrett (1)
154. Peter Schneider-Kamp (1)
155. Huaiyu Zhu (1)
156. Gregory Lielens (1)
157. Paul F. Dubois (1)
158. Sean Reifschneider (1)
159. Grant Griffin (1)
160. Jonathan Riehl (1)
161. Jason Petrone (1)
162. Frédéric B. Giacometti (1)
163. James C. Ahlstrom (1)
164. Jim Althoff (1)
165. Neil Hodgson (1)
166. Trent Mick (1)
167. David Eppstein (1)
168. Walter Dörwald (1)
169. Oren Tirosh (1)
170. Stepan Koltsov (1)
171. Scott Gilbert (1)
172. Thomas Heller (1)
173. Jeff Epler (1)
174. Just van Rossum (1)
175. Thomas Bellman (1)
176. Kevin Altis (1)
177. Dave Cole (1)
178. Andrew McNamara (1)
179. Cliff Wells (1)
180. Jack Diederich (1)
181. Peter Harris (1)
182. Roman Suzi (1)
183. Mike Meyer (1)
184. W Isaac Carroll (1)
185. Terence Way (1)
186. Steven Taschuk (1)
187. Kevin D. Smith (1)
188. Peter Astrand (1)
189. Samuele Pedroni (1)
190. Christian R. Reis (1)
191. Andrew McClelland (1)
192. Michael P. Dubner (1)
193. Micah Elliott (1)
194. Björn Lindqvist (1)
195. Jiwon Seo (1)
196. Ben North (1)
197. Lino Mastrodomenico (1)
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