NumFOCUS at PyCon 2025
Join us at PyCon 2025 to support open source projects in scientific computing and data science. Meet the maintainers, attend workshops, and learn how NumFOCUS is advancing open science.
About NumFOCUS
NumFOCUS is a 501(c)(3) nonprofit supporting innovative open source scientific software projects. We promote sustainable high-level programming languages, reproducible research, and a diverse community.
Open Code
Supporting open source projects that power scientific computing and data analysis.
Better Science
Promoting best practices for reproducible research and open science.
Sustainable Development
Ensuring long-term sustainability for critical open source tools.
Open Source Advocacy
NumFOCUS provides vital infrastructure and support to open source projects at the heart of science and data. Through fiscal sponsorship, we offer services that help projects stay sustainable, grow their communities, and focus on building tools—not bureaucracy. Whether it’s managing donations, securing grants, or offering mentorship opportunities, we’re here to advocate for the open tools that power real-world impact.
We support projects with:
Financial Administration
Legal & Operational Guidance
Grant Writing & Fundraising Support
Marketing & Promotion
Community Building & Events
Mentorship & Program Participation
Project Support
You can play a role in sustaining and growing the open source scientific ecosystem through NumFOCUS. We offer various ways to support, including:
Membership Program
Our membership program provides essential support to open source scientific tools while offering researchers and corporations opportunities to engage with project leaders. Members gain benefits like event presentation slots and OS Project Transition Workshops, fostering collaboration and providing insight into the open source ecosystem. Join us to connect directly with the community shaping the future of scientific software.
Donate to Small Development Grants
Support targeted innovation by donating to our Small Development Grants program. These grants fund crucial improvements in usability, release times, and community growth for NumFOCUS projects. Your contribution empowers developers to enhance essential scientific software.
Donate to our Projects
Connect and Learn
Join Our Events
A key part of NumFOCUS’s mission is education and community building. Through events like PyData and the SciPy Conference, we bring together developers, scientists, and data enthusiasts to explore the latest advancements in open source scientific computing. All proceeds from many of these events directly support the continued development and growth of the open source ecosystem.
PyData
PyData is the center of NumFOCUS’s educational efforts—a global community where data enthusiasts, developers, and scientists come together to share ideas, learn from each other, and explore the latest in data science. Whether you’re working in Python, Julia, R, or something else entirely, PyData events are all about exchanging best practices, testing new approaches, and collaborating on emerging tools for everything from data wrangling to visualization. Organized by NumFOCUS, a nonprofit supporting open-source scientific tools, all PyData proceeds go right back into the community—funding the software and projects that keep data science moving forward.
PyData London
PyData London 2025 is a 3-day in-person event for the international community of data scientists, data engineers, and developers of data analysis tools to share ideas and learn from each other.
PyData Berlin
PyData Berlin 2025 is a 3-day event for the international community of data scientists, data engineers, and developers of data analysis tools to share ideas and learn from each other.
PyData Amsterdam
PyData Amsterdam 2025 is a 3-day event from September 24- 26, for the international community of users and developers of data analysis tools to share ideas and learn from each other.
PyData Paris
Expand your knowledge, explore new possibilities, and connect with fellow pioneers at PyData Paris 2025.
PyData Tel Aviv
PyData Tel Aviv 2025 is a 1-day event for the international community of data scientists, data engineers, and developers of data analysis tools to share ideas and learn from each other.
SciPy 2025
Mark your calendars for SciPy 2025 in Tacoma, WA, from July 7-13! This premier scientific Python conference showcases the latest scientific and technical computing advancements using Python.
Join researchers, developers, and data scientists from around the world at SciPy 2025. This annual conference brings together the scientific Python community to share cutting-edge research, showcase tools and techniques, and advance open source software for science.
Whether you’re presenting, sprinting, or just soaking it all in, SciPy offers a unique opportunity to connect with the people behind the libraries you use every day.
What to Expect:
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Tutorials on core and emerging topics
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Talks from leaders in scientific computing
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Community-building events and meetups
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Developer sprints to drive project progress
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A welcoming and inclusive atmosphere
Highlighted Tracks
Celebrating the “Sci” in SciPy
From climate science to space exploration, this track highlights the real-world research made possible by open source tools.
Machine Learning, Data Science, and Explainable AI
Explore the cutting-edge machine learning methods and growing importance of transparency and interpretability in AI.