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/free-labour
14. brettcannon/travelbrag
15. pypa/packaging
16. brettcannon/dotfiles
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. brettcannon/WWBD
8. python/devinabox
9. brettcannon/trips-history
10. brettcannon/pep425
11. brettcannon/microvenv
12. brettcannon/check-for-changed-files
13. brettcannon/py-pip
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. microsoft/vscode-docs
22. brettcannon/sans-io
23. brettcannon/modutil
24. brettcannon/time-clock
25. brettcannon/flatten_filenames
26. brettcannon/find-duplicate-files
27. elixir-lang/elixir-lang.github.com
28. brettcannon/riscv-harmony
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/pip-secure-install
40. brettcannon/record-type
41. Azure/msrest-for-python
42. python-hyper/uritemplate
43. pypa/distutils
44. microsoft/TypeScript-Handbook
45. emmatyping/python-wasm
46. Azure/msrestazure-for-python
47. brettcannon/defy-layout-scorer
48. python/buildmaster-config
49. orsenthil/cpython-hg-to-git
50. python-hglib

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