Open source scientific computing doesn't have an off-season. Publishing papers, shipping updates, and building the tools that will power next year's breakthroughs happen year-round. Fuel the future this summer: hubs.la/Q04kYgyx0

[NumFOCUS Project Update] GRASS http://8.5.0. A Step Change for Python Users. After two years of focused work, the GRASS community has shipped http://8.5.0. The biggest story is how much better GRASS feels from Python... But you have to read the NumFOCUS project update blog to learn more about that. Read more at hubs.la/Q04kL4cT0 Support projects like GRASS and Max the Stack by donating to NumFOCUS at hubs.la/Q04kM3XM0

Maxed-Out Moment — SciML   Scientific machine learning is one of the most exciting frontiers in computational science — and it’s happening in open source. Watch the SciML project demo from our b.o.s.s. town hall series.   Innovation thrives because of community support like yours.   Link: hubs.la/Q04knvw-0 Max the Stack by donating at hubs.la/Q04knzWT0

Open Source Software Needs You   The Sovereign Tech Agency just committed $300K to mlpack, a NumFOCUS-sponsored project, to strengthen open-source machine learning infrastructure. Their reasoning: the general lack of investment in open-source ML/AI has allowed a few dominant players to play an outsized role in shaping our digital infrastructure.   Government funders see the stakes. Do you?   Max the Stack and keep critical open tools funded, independent, and accessible. hubs.la/Q04k9x380

[NumFOCUS Project Update] Blosc is excited to announce C-Blosc2 http://3.0.3: A fast, compressed, and persistent binary data store library for C. Read the release notes to learn what's new at hubs.la/Q04k8N980 Support projects like Blosc and Max the Stack by donating to NumFOCUS at hubs.la/Q04k9pVR0

[NumFOCUS Project Update] ITK 5.4.6 release is live! Check out the updates and more on GitHub at hubs.la/Q04jZMvQ0

What's Travis Oliphant — creator of NumPy and co-founder of NumFOCUS — building right now? He calls it the distributed AI economy. And he's approaching it from three angles: Open Teams — a distributed AI marketplace where people can buy, sell, and build on open source A venture fund & incubator — to support entrepreneurs building businesses that serve in that economy and deploy capital where it has the most impact The Applied AI Society — a nonprofit focused on upskilling, community building, and keeping AI and your data in your control "We're in a moment that can serve all of us, or serve a few of us. I'm really eager to see people lean into the open source ethos that led to AI as it is today." Check out our YouTube page tomorrow to see his full Give Me 5 episode.

The NumPy team was busy in April on two significant fronts. First, they’ve completed a major rework of their release process to deliver meaningful improvements for supply chain security — a critical investment for a library that underpins nearly all of scientific Python. Second, the 2025 NumPy Fellowship has concluded with an impressive outcome: NumPy is now fully type-checked. This milestone brings improved developer experience and editor tooling support for one of the most widely used libraries in the ecosystem. Support projects like NumPy and Max the Stack by giving today at hubs.la/Q04jgFmS0

Summer is here. The stack doesn’t stop. Neither do we. Help us keep the NumFOCUS stack funded through summer and beyond. Support NumFOCUS today: hubs.la/Q04hMyGl0

Ernest Kabahima's Journey into OSS | Give Me 5 S2E4 Ernest Kabahima joined PyData Global as a volunteer. Then came the NumFOCUS Impact Scholarship Program. Two years of mentors. Collaborators. Community building. The NumHack hackathon. And a growing sense that he wasn't just learning the ecosystem — he was becoming part of it. Programs like this don't just teach skills. They build builders. Watch the full episode of his Give Me 5 interview at hubs.la/Q04f3LQg0

BONUS CONTENT: Give Me 5 S2E4 with Ernest Kabahima The advice Ernest Kabahima would give his younger self joining PyData? → Connect with others. Relationships build careers. → Participate actively in community. Show up, not just watch. → Let curiosity and passion lead. They'll take you further than any roadmap. Watch his full episode of Give Me 5 Now at hubs.la/Q04f506G0

mlpack received $300K from the Sovereign Tech Agency to strengthen open-source ML infrastructure. Over the next 18 months, you can expect: modern GPU backends, ONNX support, better Python/R/Julia bindings, DuckDB Arrow integration, and more. Read more on the NumFOCUS blog: hubs.la/Q04f555R0

Give Me 5 S2E4 is now live! Ernest Kabahima helped found PyData Kampala to make open science accessible to everyone in his region. He supports volunteers running meetups, workshops, study groups, and collaborative projects. In just 5 minutes, Ernest covers: → Why closed AI is a bottleneck — and open AI is a catalyst for scientific progress → How community-first programs like NumFOCUS Impact Scholarship shaped his entire journey Watch S2E4 now: hubs.la/Q04f25lF0 Give Me 5 is a NumFOCUS production. Support open source science at hubs.la/Q04d-KnX0.

Coming your way tomorrow: S2E4 of Give Me 5! Join MK as he talks with Ernest Kabahima from PyData Kampala about his journey into open source software.

Open source maintainers are in a strange position: their packages might power thousands of production workflows, and they don’t know how to show it. At the first NumFOCUS b.o.s.s. town hall — presented with our partner @anacondainc — Daina Bouquin laid out exactly what's being built to change that: → A dedicated analytics dashboard for maintainers — co-designed with the community → Trusted publishing via OIDC (no more long-lived GitHub secret tokens) → An open API so you can build on your own package data → AI integrations to surface your work at the point of developer discovery These are still being built — and Anaconda is actively looking for maintainers to help shape them. Read more about the b.o.s.s. town hall and see the talks yourself on the NumFOCUS blog at hubs.la/Q04dfhyC0

During his recent episode of Give Me 5, Telmo Felgueira (@TSFelg) discussed how the community can support, specifically by contributing to learning and growth opportunities at PyData Lisbon. Watch the full episode now: hubs.la/Q04czN6s0

Another great opportunity from @DynareTeam! Learn more about the 5th Dynare Workshop for Advanced Users in Ispra with the post below!

Give Me 5, S2E3 is now live! Telmo Felgueira is an ML Engineering Manager at Loka, co-organizer of PyData Lisbon, and someone helping biotech clients navigate a world where a new foundation model drops every single week. In just 5 minutes, he covers: → Why the definition of open source is getting dangerously blurry in AI → Why bio AI has the highest open source stakes of any field — and why most people aren't talking about it → The natural gravity toward closed data in biotech, and why we need to fight it consciously Watch S2E3 now: hubs.la/Q04cnqVD0 Give Me 5 is a NumFOCUS production. Support open source science at hubs.la/Q04cnnxT0.