🟡🐍Sviatoslove.pie♥🇺🇦#StandWithUkraine🙏 | українець на чужині @webknjaz.me https://savelife.in.ua/en
Rabbit hole explorer & serial #FOSS maintainer: @aiohttp.org, ansible-core, CherryPy, pip-tools, pypi-publish, CPython.
💘💍 @bluebirrrrd.bsky.social
🗣️🇺🇦🇺🇸
🤏🇨🇿🇪🇸
https://github.com/sponsors/webknjaz
#opensource #укрблу #укртві :wq
@hoodmane.bsky.social @hoodmane.bsky.social Pyodide maintainer, Cloudflare Python workers
Open Source Collective @oscollective.org A 501c6 Fiscal Host dedicated to creating a healthy ecosystem to sustain open source technology for the future. 👨🏼💻
Learn more about us - https://oscollective.org
Apply - https://opencollective.com/opensource
@maartenbreddels.bsky.social @maartenbreddels.bsky.social 
Juan Luis @juanlu.space Posting about open source ecology, resisting AI, y política española. Software Engineer + DevRel at Canonical. Luddite. Proudly hosted on @eurosky.social 🇪🇺
#ADHDAwareness
passagemath @passagemath.org General-purpose #OpenSource #Mathematics software system in #Python.
The pip-installable modularized portable compatible fork of #SageMath.
https://passagemath.org/ · https://github.com/passagemath · posts by @mkoeppe.bsky.social
Skrub @skrub-data.bsky.social skrub is a Python library to ease preprocessing and feature engineering for tabular machine learning.
Our long-term goal is to directly connect database tables to machine learning estimators.
https://skrub-data.org
https://discord.gg/ABaPnm7fDC
Stephen Diehl @www.stephendiehl.com Softwares, maths, compilers and bears.
https://www.stephendiehl.com/
Stéfan van der Walt @mentat.za.net Researcher at UC Berkeley, mainly focused on Scientific Python. South African raising kids in the Californian mountains. Otherwise lives in Emacs & org-mode. Enjoys running, philosophy, history, and building things with others.
Iisakki Rotko @iisakki.rtko.eu Postmodern relative truth spinner.
SWE @widgetti, working mainly on Solara & PyCafe
Matthias Köppe @mkoeppe.bsky.social Professor, UC Davis #Mathematics. He/him. #DavisCA.
Made #SageMath pip-installable @passagemath.org.
https://github.com/mkoeppe #Python #OpenSource
#cutgeneratingfunctionology #optimization #orms
I block accounts to increase reading focus.
Paul “π” Ivanov - @ivanov@mastodon.sdf.org @paulivanov.bsky.social onward and awkward.
Tetsuo Koyama @tkoyama010.bsky.social Pythonista & vimmer & PyVista Developer team
Developer team of #PyVista
@SciPyConf tutorial co-chair
icon by @pyconjapan CC-BY 2.0
Technical Steering Committee of @NumFOCUS
Posit @posit.co We make free, open-source software for data scientists like the RStudio IDE.
We're formerly known as RStudio. You can always download our open-source IDE here. https://posit.co/download/rstudio-desktop/
Bokeh @bokeh.org Bokeh is an interactive data visualization library targeting modern browsers for presentation. Bokeh helps you create interactive plots, dashboards + data apps using Python.
Panel @panel.holoviz.org The powerful data exploration & web app framework for Python 🐍
George Stagg @gws.phd Software Engineer @ Posit working on Open Source & AI. Maths. Physics. I like making things.
Emscripten @emscripten.org 
Tania Allard @ixek.bsky.social Director Quansight Labs
✨ MLOps, OSS, Research Software Engineering
🚀 GDE - ML @ Google | PSF fellow and vice-chair of the board of directors
Pyladies Global Council
🌱 Disability justice activist, feminist, neurodivergent, developer 
Hugging Face @hf.co The AI community building the future! 
Gyeongjae @gjae-choi.bsky.social 
Pavithra Eswaramoorthy @pavithraes.me DevRel at Quansight. Thinking about open source & community. 💜
(she/her)
Kyle Barron @kylebarron.dev Creating the next generation of geospatial data tools for Python & the browser with GeoArrow, GeoParquet & GeoRust @developmentseed | he/him 🌈- J @joerick.me @joerick.me
@wlach.bsky.social @wlach.bsky.social Mostly lurking here, see https://mastodon.social/@wlach for actual posts
"Augeas" @augeas.bsky.social "All of this has happened before, all of this will happen again." augeas@eleusis.social
Generative Noise. Fallen Physicist. Research Software for a living, Data Larceny by Force of Habit.
https://augeas.github.io
Cloudflare @cloudflare.social Cloudflare is the world’s leading connectivity cloud, and we have our eyes set on an ambitious goal — to help build a better Internet.
MyST Markdown @mystmd.org Markdown with superpowers for writing scientific 👨🔬 and technical 📈papers. #OpenSource & maintained by Project #Jupyter.
Peter W🤓 @wang.social Anaconda Founder&Head of AI; created the PyData movement, PyScript, Bokeh, Datashader; Fellow @ Python Software Foundation; Center for Humane Tech
Game~B; Physics, Cybernetics, Memetics. A student of the human condition.
Memento mori
NumFOCUS @numfocus.bsky.social Open Code = Better Science NumFOCUS is a 501(c)(3) nonprofit that supports and promotes world-class, innovative, open source scientific computing.
Angus Hollands @agoose77.bsky.social 🌍 Open Source Applications Engineer @ 2i2c!
📚 Jupyter Book core team member.
🎓 PhD in Nuclear Physics from the University of Birmingham.
Project Jupyter @jupyter.org Multi-language interactive computing environments. Jupyter Notebook, JupyterLab and related projects – @mentions not monitored. Open issues on GitHub.
Open Source Pledge ⇌ @opensourcepledge.com Open Source Pledge is a group of companies with a shared commitment to paying the maintainers of the Open Source software we all consume.
https://opensourcepledge.com
@scientific-python.org @scientific-python.org 
James Balamuta @coatless.bsky.social omnipresent explorer of the unknown, fashionably caffeinated informatics phd, amorous cavalier. design, build, analyze. #rstats on #macos + #webr and #python with #pyodide
Andrea Giammarchi @webreflection.bsky.social 
Laíns ⚡🌈🇵🇸 @missingclara.bsky.social they/them • python core dev • archlinux packager • PSF D&I and User Success WG • electro-metrology, semiconductor manufacturing, and nuclear physics enthusiast
scikit-learn @scikit-learn.org Machine learning in Python • Open Source
https://scikit-learn.org
Wes McKinney @wesmckinney.com Principal Architect @posit.co, GP Composed Ventures, Co-founder Voltron Data. Open source: Apache Arrow, pandas, Ibis. "Python for Data Analysis" book
Olivier Grisel @ogrisel.bsky.social Software engineer at probabl, scikit-learn contributor.
Also at:
https://sigmoid.social/@ogrisel
https://github.com/ogrisel
「Cristián」 @maureira.dev Qt Developer 🇨🇱 🇩🇪 👨💻 | @python.org Fellow & Director | https://hablemospython.dev 🐍 | PyPI moderator | Former astrophysicist at AEI MPI | https://maureira.dev
marimo @marimo.io An open-source reactive Python notebook: reproducible, git-friendly, execute as scripts, share as apps!
GitHub: https://github.com/marimo-team/marimo
Discord: https://marimo.io/discord?ref=bsky
Vincent D. Warmerdam @koaning.bsky.social Prefer common sense over hype. Employed at @marimo.io, known for calmcode.io and koaning.io. Also working on remember.cards these days.
DuckDB @duckdb.org DuckDB is an analytical in-process SQL database management system. "DuckDB" and the DuckDB logo are registered trademarks of the DuckDB Foundation.
Polars @pola.rs Dataframes powered by a multithreaded, vectorized query engine, written in Rust.
Donghee Na @corona10.bsky.social - ML Infrastructure SWE @ Karrot (당근)
- Python Steering Council and Core dev
Opinions are my own not my employer: https://github.dongheena.com
Russell Keith-Magee @freakboy3742.bsky.social Not really here. Just ensuring that my handle isn't squatted.
Samuel Colvin @sa.muelcolvin.com Building Pydantic Logfire - uncomplicated observability for Python. Sequoia Scout.
Python Software Foundation @python.org The nonprofit organization behind the Python programming language. For help with Python code: http://python.org/about/help/
On Mastodon: @ThePSF@fosstodon.org
Łukasz Langa @lukasz.langa.pl CPython Developer in Residence, Python 3.8 and 3.9 release manager. Gradual typing enthusiast, asynchronous programming proponent, creator of the auto-formatter Black.
He produces electronic music, which includes software and hardware of his own making.
QuantStack @quantstack.bsky.social A team of open-source maintainers and engineers providing solutions and support for open-source projects used by millions worldwide. #Jupyter, #condaforge, #Mamba, #ApacheArrow, #Xtensor, and more.
Roman Yurchak @romanyurchak.bsky.social ML engineer & Founder at Symerio.
Previously core developer Pyodide, scikit-learn.
🇺🇦
Srihari Thyagarajan @haleshot.bsky.social Technical Writer at deepnote.com | prev marimo.io. | Personal blog: http://haleshot.github.io/posts/
Quansight @quansight.com Forging the bridge between enterprise innovation and open source sustainability.
James Lamb @jameslamb.bsky.social I ❤️ open source. Working on LightGBM and RAPIDS.
Keep Chicago out your mouth.
he/him. This is me: https://github.com/jameslamb
@francescalted.bsky.social @francescalted.bsky.social - A Agriya Khetarpal @agriyakhetarp.al [I'm only sometimes active here] Luddite • Full-time Pythonista, part-time poet • @pyodide.org maintainer • @scipy.in organiser • OSS dev working on Scientific Python • 24 years old • Trying to change the world, one commit at a time.
Simon Willison @simonwillison.net Independent AI researcher, creator of datasette.io and llm.datasette.io, building open source tools for data journalism, writing about a lot of stuff at https://simonwillison.net/
Plotly @plotly.com Plotly builds data visualization tools and platforms for analysts, engineers, scientists, and coding agents you work with.
SciPy Conference 2026 @scipyconf.bsky.social SciPy 2026 Conference for Scientific and Technical Computing topics in Python. Tutorials July 13-14, Conference July 15-17, Sprints July 18-19.
Henry Schreiner @henryiii.bsky.social Princeton RSE. Scikit-HEP, Scikit-build, PyPA/build, PyPA/cibuildwheel, pybind11, CLI11, & plumbum. Also on @henryiii@fosstodon.org and @henryschreiner3 (X).
Martin Renou @martinrenou.bsky.social Technical Director @quantstack.bsky.social. Believe in open-source software and open-science. Love computer graphics and Python.
Antonio Cuni @antocuni.bsky.social SPy creator, HPy founder, PyPy core dev, PyScript core dev, doing Python, compilers and WASM stuff at @anacondainc.bsky.social
Also on:
- github.com/antocuni
- https://mastodon.social/@antocuni
- https://twitter.com/antocuni
Fabio Pliger @fpliger.bsky.social Creator of PyScript, writing sw at Anaconda, Inc, really into food, photography, traveling, among other things 
Matthew Feickert @matthewfeickert.com Research scientist at UW-Madison data science institute working on #LHC #physics and data science with the ATLAS experiment @ CERN and IRIS-HEP. PhD @ SMU
Akshay Agrawal @akshaykagrawal.bsky.social Building the @marimo.io notebook: https://github.com/marimo-team/marimo.
PyMDE, CVXPY, & ex TensorFlow developer. Minimum-Distortion Embedding book author. Stanford BS/MS/PhD.
Jeremy Tuloup @jtp.io Technical Directory at QuantStack, Project Jupyter Core Developer & Distinguished Contributor - he / him - https://github.com/jtpio - jtp.io