1. python/cpython

1. python/peps
2. microsoft/vscode-python
3. brettcannon/python-launcher
4. brettcannon/caniusepython3
5. microsoft/vscode-jupyter
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. brettcannon/free-labour
15. brettcannon/travelbrag
16. pypa/packaging
17. Which-Film/which-film.info

1. microsoft/pvscbot
2. brettcannon/mousebender
3. python/importlib_resources
4. PyCQA/modernize
5. brettcannon/release-often
6. python/bedevere
7. python/devinabox
8. brettcannon/WWBD
9. brettcannon/trips-history
10. brettcannon/microvenv
11. brettcannon/py-pip
12. brettcannon/pep425
13. brettcannon/check-for-changed-files
14. pypa/packaging.python.org
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/find-duplicate-files
26. elixir-lang/elixir-lang.github.com
27. brettcannon/riscv-harmony
28. brettcannon/flatten_filenames
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. python/core-workflow
36. microsoft/vscode-dev-containers
37. Azure-Samples/Azure-MachineLearning-DataScience
38. microsoft/vscode-python-devicesimulator
39. Azure/msrest-for-python
40. brettcannon/record-type
41. brettcannon/pip-secure-install
42. pypa/distutils
43. emmatyping/python-wasm
44. microsoft/TypeScript-Handbook
45. python-hyper/uritemplate
46. Azure/msrestazure-for-python
47. brettcannon/defy-layout-scorer
48. orsenthil/cpython-hg-to-git
49. python/buildmaster-config
50. python-hglib

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

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

1. Alyssa Coghlan (53)
2. Guido van Rossum (49)
3. Barry Warsaw (41)
4. Victor Stinner (34)
5. Brett Cannon (33)
6. Donald Stufft (21)
7. Petr Viktorin (19)
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)
27. Jeremy Hylton (7)
28. Thomas Wouters (7)
29. Moshe Zadka (7)
30. Benjamin Peterson (7)
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)
41. Inada Naoki (6)
42. Brandt Bucher (6)
43. Pablo Galindo Salgado (6)
44. Tzu-ping Chung (6)
45. Collin Winter (6)
46. Anthony Baxter (5)
47. Neil Schemenauer (5)
48. Skip Montanaro (5)
49. Ethan Furman (5)
50. Emma Harper Smith (5)
51. Talin (5)
52. Eric Traut (5)
53. Irit Katriel (5)
54. Paul Prescod (4)
55. Gregory Ewing (4)
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. Steven Troxler (2)
142. Erik De Bonte (2)
143. Sam Gross (2)
144. Ralf Gommers (2)
145. Savannah Ostrowski (2)
146. Hood Chatham (2)
147. Daniel Stutzbach (2)
148. Joe Carey (2)
149. Martijn Faassen (1)
150. The Python core team and community (1)
151. Paul Barrett (1)
152. Peter Schneider-Kamp (1)
153. Huaiyu Zhu (1)
154. Gregory Lielens (1)
155. Paul F. Dubois (1)
156. Sean Reifschneider (1)
157. Grant Griffin (1)
158. Jonathan Riehl (1)
159. Jason Petrone (1)
160. Frédéric B. Giacometti (1)
161. James C. Ahlstrom (1)
162. Jim Althoff (1)
163. Neil Hodgson (1)
164. Trent Mick (1)
165. David Eppstein (1)
166. Walter Dörwald (1)
167. Oren Tirosh (1)
168. Stepan Koltsov (1)
169. Scott Gilbert (1)
170. Thomas Heller (1)
171. Jeff Epler (1)
172. Just van Rossum (1)
173. Thomas Bellman (1)
174. Kevin Altis (1)
175. Dave Cole (1)
176. Andrew McNamara (1)
177. Cliff Wells (1)
178. Jack Diederich (1)
179. Peter Harris (1)
180. Roman Suzi (1)
181. Mike Meyer (1)
182. W Isaac Carroll (1)
183. Terence Way (1)
184. Steven Taschuk (1)
185. Kevin D. Smith (1)
186. Peter Astrand (1)
187. Samuele Pedroni (1)
188. Christian R. Reis (1)
189. Andrew McClelland (1)
190. Michael P. Dubner (1)
191. Micah Elliott (1)
192. Björn Lindqvist (1)
193. Jiwon Seo (1)
194. Ben North (1)
195. Lino Mastrodomenico (1)
196. Richard Oudkerk (1)
197. Alexandre Vassalotti (1)
198. Jervis Whitley (1)
199. Kerrick Staley (1)
200. Greg Slodkowicz (1)
201. Michael Foord (1)
202. Paul Colomiets (1)
203. Daniel Urban (1)
204. Benoit Bryon (1)
205. Lennart Regebro (1)
206. Todd Rovito (1)
207. Stefan Krah (1)
208. Holger Krekel (1)
209. Chris McDonough (1)
210. Joshua Landau (1)
211. Lukas Puehringer (1)
212. Joshua Lock (1)
213. Lois Anne DeLong (1)
214. Ben Hoyt (1)
215. Joseph Martinot-Lagarde (1)
216. Sebastian Kreft (1)
217. Charles-François Natali (1)
218. Christopher Barker (1)
219. Martin Teichmann (1)
220. Robert Kuska (1)
221. James Polley (1)
222. Ed Schofield (1)
223. Joseph Jevnik (1)
224. Mike G. Miller (1)
225. Robert T. McGibbon (1)
226. Serhiy Storchaka (1)
227. Dino Viehland (1)
228. Ryan Gonzalez (1)
229. Philip House (1)
230. Lisa Roach (1)
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232. Philipp Angerer (1)
233. Erik M. Bray (1)
234. Masayuki Yamamoto (1)
235. Markus Meskanen (1)
236. Julien Palard (1)
237. R David Murray (1)
238. Elvis Pranskevichus (1)
239. Eric N. Vander Weele (1)
240. Mark Williams (1)
241. Kushal Das (1)
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243. Michael J. Sullivan (1)
244. Till Varoquaux (1)
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247. Berker Peksag (1)
248. Damien George (1)
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250. Sumana Harihareswara (1)
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253. Sébastien Eustace (1)
254. Laurie Opperman (1)
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256. Philippe Ombredanne (1)
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274. Germán Méndez Bravo (1)
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279. Marta Gómez Macías (1)
280. Alice Purcell (1)
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