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/travelbrag
14. brettcannon/dotfiles
15. brettcannon/free-labour
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/pep425
12. brettcannon/check-for-changed-files
13. pypa/packaging.python.org
14. brettcannon/py-pip
15. brettcannon/python-azure-web-app-cookiecutter
16. brettcannon/cpython-wasi-build
17. brettcannon/stdlib-stats
18. brettcannon/mnfy
19. microsoft/vscode-docs-archive
20. microsoft/vscode-docs
21. dabeaz/curio
22. brettcannon/sans-io
23. brettcannon/modutil
24. brettcannon/time-clock
25. elixir-lang/elixir-lang.github.com
26. brettcannon/riscv-harmony
27. brettcannon/flatten_filenames
28. brettcannon/find-duplicate-files
29. uranusjr/packaging-metadata-comparisons
30. brettcannon/basicenum
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/record-type
40. brettcannon/pip-secure-install
41. Azure/msrest-for-python
42. python-hyper/uritemplate
43. Azure/msrestazure-for-python
44. pypa/distutils
45. emmatyping/python-wasm
46. microsoft/TypeScript-Handbook
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. dusty-phillips/match-variant
4. brettcannon/choose-a-font.dev
5. brettcannon/importlib
6. python/steering-council
7. JuliaLang/julia
8. python/blurb
9. microsoft/vscode-anaconda-extension-pack
10. microsoft/vscode-telemetry-extractor
11. rescript-lang/rescript-lang.org
12. brettcannon/nowhere-on-the-web
13. eclipse-archived/ceylon-lang.org
14. beeware/toga
15. lustre-labs/lustre
16. python/cherry-picker
17. brettcannon/porting-to-python-3-notebook
18. Azure/azure-sdk-for-python
19. microsoft/vscode
20. python/typeshed
21. micktwomey/pyiso8601
22. openlawlibrary/pygls
23. python/planet
24. rust-lang/rust
25. cookiecutter/cookiecutter
26. brettcannon/vscode-zephyr-asdl
27. aosabook/500lines
28. pypa/pipenv
29. Homebrew/legacy-homebrew
30. WebAssembly/design
31. Homebrew/homebrew-core
32. square/dagger
33. github/gitignore
34. brettcannon/cpython-wasi-buildbot
35. python/psf-salt
36. vstinner/misc
37. microsoft/vscode-wiki
38. thechangelog/show-notes
39. dotnet/docs
40. inko-lang/inko
41. badges/shields
42. micropython/micropython
43. jazzband/pip-tools
44. Mariatta/github-bot-tutorial
45. python/cpython-devcontainers
46. MeeseeksBox/meeseeksbox.github.io
47. microsoftarchive/msgraph-sdk-python
48. kushaldas/pym
49. wntrblm/nox
50. MicrosoftDocs/visualstudio-docs
51. microsoft/language-server-protocol
52. astral-sh/ruff
53. microsoft/vscode-python-templates
54. python/pyperformance
55. gleam-lang/language-tour
56. riverscuomo/apps
57. ponylang/pony-tutorial
58. huggingface/agents-course
59. WebAssembly/wasi-sdk
60. matplotlib/matplotlib
61. python/core-sprint
62. pypa/flit
63. microsoft/vscode-docker
64. MPOS/php-mpos
65. conda/conda
66. sarugaku/resolvelib
67. python/pythonineducation.org
68. kushaldas/pep582
69. jaraco/skeleton
70. larryhastings/appeal
71. vibora-io/vibora
72. conda/ceps
73. python-hyper/h2
74. python/python-docs-theme
75. microsoft/sql-server-samples
76. beeware/beeware.github.io
77. beeware/liquid-demo
78. aio-libs/aiohttp
79. rustwasm/book
80. asyncio-docs/asyncio-doc
81. bloodyowl/rescript-test
82. moby/mobywebsite
83. bytecodealliance/wasmtime
84. dabeaz/ply
85. gleam-lang/otp
86. pyscript/pyscript
87. fastapi/sqlmodel
88. microsoft/vscode-isort
89. python/typing
90. buildout/buildout
91. microsoft/TypeScript-wiki
92. progit/progit2
93. Django
94. beeware/briefcase
95. Azure/azure-functions-python-library
96. microsoft/az-partner-center-cli
97. mozilla-services/konfig
98. rust-lang/log
99. riscv-software-src/riscv-tests
100. cometkim/rescript-vitest
101. absurdia/absurdia-py
102. Azure/azure-cosmos-python
103. jupyter/notebook
104. twisted/klein
105. microsoft/PTVS
106. beeware/podium
107. ebkalderon/tower-lsp
108. pycascades/welcome-wagon-2018
109. psf/webassembly
110. riverscuomo/new-albums
111. realpython/python-guide
112. gleam-lang/erlang
113. lpil/sqlight
114. aurelia/documentation
115. Azure/azure-cli
116. microsoft/vscode-extension-samples
117. spotify/pedalboard
118. cardoe/stderrlog-rs
119. Homebrew/brew
120. victor-o-silva/python-links-from-link-header
121. 11ty/11ty-website
122. bagder/http2-explained
123. conda/conda-build
124. briandealwis/ferret
125. saschpe/mozilla-plugins
126. clearlydefined/website
127. ericpalakovichcarr/pytest-pythonpath
128. scikit-learn/scikit-learn
129. devcontainers/images
130. microsoft/python-sample-vscode-django-tutorial
131. golang/go
132. topazproject/topaz
133. Devid-Ba/Text-adventure
134. gitkraken/vscode-gitlens
135. pyvideo/old-pyvideo
136. pypi/warehouse
137. python/pythontestdotnet
138. pdm-project/pdm
139. astral-sh/uv
140. Quansight-Labs/free-threaded-compatibility
141. pypa/setuptools-scm
142. pypa/trove-classifiers
143. pypa/build
144. microsoft/vscode-tools-for-ai
145. psf/black
146. Enderchief/gleam-tools
147. Lukasa/language-restructuredtext
148. python/importlib_metadata
149. dusty-phillips/macabre
150. psf/fundable-packaging-improvements
151. Fyrd/caniuse
152. rocketreach/rocketreach_python
153. gleam-lang/website
154. python/mypy
155. stellar-deprecated/docs
156. MagicStack/MagicPython
157. VSCodeVim/Vim
158. luabud/hello-vscodespaces
159. extism/extism
160. markshannon/faster-cpython
161. actions-rs/install
162. python-poetry/tomlkit
163. jupyter-book/mystmd.org
164. gleam-lang/gleam
165. chhantyal/py3readiness
166. stellar/awesome-stellar
167. livebook-dev/livebook
168. pablogsal/cpython_leaderboard
169. microsoft/debugpy
170. conda/conda-docs
171. getsentry/responses
172. pytest-dev/pytest
173. MicrosoftDocs/azure-docs
174. google/yapf
175. sphinx-doc/sphinx
176. pyca/pyopenssl
177. google/grumpy
178. nayafia/nayafia
179. jupyter/jupyter.github.io
180. lorenzofox3/zora
181. facebook/pyre-check
182. GraphQLGuide/book
183. hynek/build-and-inspect-python-package
184. syl20bnr/spacemacs
185. kushaldas/asaman
186. bitbldr/sprocket_docs
187. ansible/ansible
188. oauthlib/oauthlib
189. diogonfs/pyinit
190. pyvideo/data
191. adafruit/Adafruit_CircuitPython_CircuitPlayground
192. mesonbuild/meson
193. regebro/supporting-python-3
194. brettcannon/character-frequency
195. jupyterlab/jupyterlab
196. score-spec/spec
197. WebAssembly/component-model
198. stellar/new-docs
199. devcontainers/features
200. rust-lang/rustfmt
201. PyCQA/pyflakes
202. microsoftgraph/python-sample-pagination
203. vscode-restructuredtext/vscode-restructuredtext
204. reubeno/brush
205. vega/ipyvega
206. starship/starship
207. bungcip/better-toml
208. w3c/ServiceWorker
209. okken/pytest-srcpaths
210. microsoftgraph/microsoft-graph-docs-contrib
211. casey/just
212. microsoft/vscode-pylint
213. palantir/python-language-server
214. zwaldowski/match-label-action
215. pypa/pipx
216. lustre-labs/ui
217. PyPy
218. defusedexpat
219. expat
220. Mercurial
221. vim
222. 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. Jeremy Hylton (7)
27. Thomas Wouters (7)
28. Moshe Zadka (7)
29. Benjamin Peterson (7)
30. Dustin Ingram (7)
31. Pablo Galindo (7)
32. Jelle Zijlstra (7)
33. William Woodruff (7)
34. Ee Durbin (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)
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200. Greg Slodkowicz (1)
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203. Daniel Urban (1)
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205. Lennart Regebro (1)
206. Todd Rovito (1)
207. Stefan Krah (1)
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