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. pypa/packaging
15. brettcannon/free-labour
16. brettcannon/travelbrag
17. Which-Film/which-film.info

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

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

(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 (20)
8. Martin von Löwis (17)
9. Steve Dower (16)
10. Łukasz Langa (15)
11. Nathaniel J. Smith (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. Pradyun Gedam (9)
22. Thomas Wouters (8)
23. Yury Selivanov (8)
24. Larry Hastings (8)
25. Christian Heimes (8)
26. Ivan Levkivskyi (8)
27. Pablo Galindo (8)
28. Ee Durbin (8)
29. William Woodruff (8)
30. Jeremy Hylton (7)
31. Moshe Zadka (7)
32. Benjamin Peterson (7)
33. Dustin Ingram (7)
34. Jelle Zijlstra (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. Zac Hatfield-Dodds (4)
67. Travis Oliphant (3)
68. Michel Pelletier (3)
69. Alex Martelli (3)
70. Michael Hudson (3)
71. Neal Norwitz (3)
72. Steven Bethard (3)
73. Armin Ronacher (3)
74. Carol Willing (3)
75. Eli Bendersky (3)
76. Eric V. Smith (3)
77. Steven D'Aprano (3)
78. Jeffrey Yasskin (3)
79. Batuhan Taskaya (3)
80. Filipe Laíns (3)
81. Erlend Egeberg Aasland (3)
82. James Hilton-Balfe (3)
83. Shantanu Jain (3)
84. Ralf Gommers (3)
85. Sergey B Kirpichev (3)
86. Gregory P. Smith (3)
87. Facundo Tuesca (3)
88. Hugo van Kemenade (3)
89. Ewa Jodlowska (3)
90. Aahz (2)
91. Oleg Broytman (2)
92. Fred L. Drake (2)
93. Jr. (2)
94. David Ascher (2)
95. Greg Wilson (2)
96. Gordon McMillan (2)
97. Christopher A. Craig (2)
98. Clark C. Evans (2)
99. Greg Stein (2)
100. Magnus Lie Hetland (2)
101. Jack Jansen (2)
102. Vinay Sajip (2)
103. Mark Hammond (2)
104. Josiah Carlson (2)
105. Terry Reedy (2)
106. Facundo Batista (2)
107. Ben Finney (2)
108. Calvin Spealman (2)
109. Tim Delaney (2)
110. Jesse Noller (2)
111. Stephen J. Turnbull (2)
112. Dirkjan Ochtman (2)
113. Miro Hrončok (2)
114. Cameron Simpson (2)
115. Alex Gaynor (2)
116. Ronald Oussoren (2)
117. Trishank Karthik Kuppusamy (2)
118. Vladimir Diaz (2)
119. Marina Moore (2)
120. Justin Cappos (2)
121. Stefano Borini (2)
122. Stefan Behnel (2)
123. Ned Deily (2)
124. Alexander Belopolsky (2)
125. Nick Humrich (2)
126. Mark E. Haase (2)
127. Robert Collins (2)
128. Koos Zevenhoven (2)
129. Dino Viehland (2)
130. Cory Benfield (2)
131. Marcel Plch (2)
132. Mario Corchero (2)
133. Geoffrey Thomas (2)
134. Maggie Moss (2)
135. Stéphane Bidoul (2)
136. Mark Mendoza (2)
137. Shannon Zhu (2)
138. Paul Ganssle (2)
139. Daniel F Moisset (2)
140. Tobias Kohn (2)
141. David Foster (2)
142. Tal Einat (2)
143. Adam Turner (2)
144. Steven Troxler (2)
145. Stan Ulbrych (2)
146. Erik De Bonte (2)
147. Germán Méndez Bravo (2)
148. Sam Gross (2)
149. Jaime Rodríguez-Guerra (2)
150. Savannah Ostrowski (2)
151. Michael Sarahan (2)
152. Hood Chatham (2)
153. Daniel Stutzbach (2)
154. Joe Carey (2)
155. Martijn Faassen (1)
156. The Python core team and community (1)
157. Paul Barrett (1)
158. Peter Schneider-Kamp (1)
159. Huaiyu Zhu (1)
160. Gregory Lielens (1)
161. Paul F. Dubois (1)
162. Sean Reifschneider (1)
163. Grant Griffin (1)
164. Jonathan Riehl (1)
165. Jason Petrone (1)
166. Frédéric B. Giacometti (1)
167. James C. Ahlstrom (1)
168. Jim Althoff (1)
169. Neil Hodgson (1)
170. Trent Mick (1)
171. David Eppstein (1)
172. Walter Dörwald (1)
173. Oren Tirosh (1)
174. Stepan Koltsov (1)
175. Scott Gilbert (1)
176. Thomas Heller (1)
177. Jeff Epler (1)
178. Just van Rossum (1)
179. Thomas Bellman (1)
180. Kevin Altis (1)
181. Dave Cole (1)
182. Andrew McNamara (1)
183. Cliff Wells (1)
184. Jack Diederich (1)
185. Peter Harris (1)
186. Roman Suzi (1)
187. Mike Meyer (1)
188. W Isaac Carroll (1)
189. Terence Way (1)
190. Steven Taschuk (1)
191. Kevin D. Smith (1)
192. Peter Astrand (1)
193. Samuele Pedroni (1)
194. Christian R. Reis (1)
195. Andrew McClelland (1)
196. Michael P. Dubner (1)
197. Micah Elliott (1)
198. Björn Lindqvist (1)
199. Jiwon Seo (1)
200. Ben North (1)
201. Lino Mastrodomenico (1)
202. Richard Oudkerk (1)
203. Alexandre Vassalotti (1)
204. Jervis Whitley (1)
205. Kerrick Staley (1)
206. Greg Slodkowicz (1)
207. Michael Foord (1)
208. Paul Colomiets (1)
209. Daniel Urban (1)
210. Benoit Bryon (1)
211. Lennart Regebro (1)
212. Todd Rovito (1)
213. Stefan Krah (1)
214. Holger Krekel (1)
215. Chris McDonough (1)
216. Joshua Landau (1)
217. Lukas Puehringer (1)
218. Joshua Lock (1)
219. Lois Anne DeLong (1)
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239. Masayuki Yamamoto (1)
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