Ten years ago, I founded QuantStack on a conviction: that we could build a sustainable business by supporting world-class open-source software to advance science.
We had no outside funding, no guarantees, just trust in open collaboration.
Read the full story: quantstack.net/blogs/Decade...
We had no outside funding, no guarantees, just trust in open collaboration.
Read the full story: quantstack.net/blogs/Decade...
QuantStack
A team behind major open-source projects of the scientific computing ecosystem such as Jupyter, Conda-Forge, Mamba, XTensor/SIMD, Apache Arrow/Parquet and more.
quantstack.net
August 17, 2026 at 6:19 PM
Ten years ago, I founded QuantStack on a conviction: that we could build a sustainable business by supporting world-class open-source software to advance science.
We had no outside funding, no guarantees, just trust in open collaboration.
Read the full story: quantstack.net/blogs/Decade...
We had no outside funding, no guarantees, just trust in open collaboration.
Read the full story: quantstack.net/blogs/Decade...
We are thrilled to introduce notebook.link, a platform that lets you create, share, and run Jupyter notebooks instantly in your browser.
Powered by JupyterLite and WebAssembly, it supports Python, R, C++, and a full in-browser terminal experience.
📖 Read the full story: medium.com/@QuantStack/...
Powered by JupyterLite and WebAssembly, it supports Python, R, C++, and a full in-browser terminal experience.
📖 Read the full story: medium.com/@QuantStack/...
Notebook.link
notebook.link
January 22, 2026 at 4:56 PM
We are thrilled to introduce notebook.link, a platform that lets you create, share, and run Jupyter notebooks instantly in your browser.
Powered by JupyterLite and WebAssembly, it supports Python, R, C++, and a full in-browser terminal experience.
📖 Read the full story: medium.com/@QuantStack/...
Powered by JupyterLite and WebAssembly, it supports Python, R, C++, and a full in-browser terminal experience.
📖 Read the full story: medium.com/@QuantStack/...
At QuantStack, we are deeply committed to advancing the @arrow.apache.org ecosystem.
Today, we introduce Sparrow-IPC, a modern C++20 implementation of Arrow IPC by Hind Montassif, Alexis Placet @alexis-placet.bsky.social, and Johan Mabille.
More details in our post: medium.com/@QuantStack/...
Today, we introduce Sparrow-IPC, a modern C++20 implementation of Arrow IPC by Hind Montassif, Alexis Placet @alexis-placet.bsky.social, and Johan Mabille.
More details in our post: medium.com/@QuantStack/...
Introducing Sparrow-IPC: A modern C++ implementation of Arrow IPC
If you work in the world of data engineering, you are probably familiar with Apache Arrow — the universal columnar format and…
medium.com
April 7, 2026 at 7:32 AM
At QuantStack, we are deeply committed to advancing the @arrow.apache.org ecosystem.
Today, we introduce Sparrow-IPC, a modern C++20 implementation of Arrow IPC by Hind Montassif, Alexis Placet @alexis-placet.bsky.social, and Johan Mabille.
More details in our post: medium.com/@QuantStack/...
Today, we introduce Sparrow-IPC, a modern C++20 implementation of Arrow IPC by Hind Montassif, Alexis Placet @alexis-placet.bsky.social, and Johan Mabille.
More details in our post: medium.com/@QuantStack/...
Joint efforts with QuantStack!
🔧 From GPU CI to OCI mirroring, @rjai.me shares how #QuansightLabs transformed @conda-forge.org's infrastructure over 2 years of CZI funding. See the complete journey: labs.quansight.org/blog/czi-eos... #OpenSource #DataScience
Two years of contributions to conda-forge: work done during our CZI EOSS 5 grant
In 2022 we were awarded a CZI EOSS grant for conda-forge. The proposal, co-submitted by Quansight Labs and QuantStack, targeted three areas: maintaining and improving conda-forge's infrastructure, cre...
labs.quansight.org
February 11, 2025 at 6:32 PM
Joint efforts with QuantStack!
Catch Afshin Darian, technical director at QuantStack and a member of the Jupyter Executive Council, in this short interview as he discusses open source software, his work at QuantStack, and the exciting challenges ahead.
www.youtube.com/watch?v=lR-x...
www.youtube.com/watch?v=lR-x...
Découvrez QuantStack avec Afshin, Technical Director
YouTube video by Welcome to the Jungle Solutions
www.youtube.com
March 28, 2025 at 8:52 AM
Catch Afshin Darian, technical director at QuantStack and a member of the Jupyter Executive Council, in this short interview as he discusses open source software, his work at QuantStack, and the exciting challenges ahead.
www.youtube.com/watch?v=lR-x...
www.youtube.com/watch?v=lR-x...
🎉 JupyterLite is now part of Project Jupyter!
Run Jupyter notebooks directly in your browser: no server, no setup.
Many thanks to the JupyterLite contributors and supporters like QuantStack, Bloomberg and the Gates Foundation.
🔗 blog.jupyter.org/jupyterlite-...
Run Jupyter notebooks directly in your browser: no server, no setup.
Many thanks to the JupyterLite contributors and supporters like QuantStack, Bloomberg and the Gates Foundation.
🔗 blog.jupyter.org/jupyterlite-...
JupyterLite Officially Joins Project Jupyter!
We are thrilled to announce that JupyterLite is now an official part of Project Jupyter. This milestone marks a significant step forward…
blog.jupyter.org
February 12, 2026 at 7:43 PM
🎉 JupyterLite is now part of Project Jupyter!
Run Jupyter notebooks directly in your browser: no server, no setup.
Many thanks to the JupyterLite contributors and supporters like QuantStack, Bloomberg and the Gates Foundation.
🔗 blog.jupyter.org/jupyterlite-...
Run Jupyter notebooks directly in your browser: no server, no setup.
Many thanks to the JupyterLite contributors and supporters like QuantStack, Bloomberg and the Gates Foundation.
🔗 blog.jupyter.org/jupyterlite-...
Journées Open Source de @insee.fr au lieu de la transformation - @sylvaincorlay.bsky.social de QuantStack fait la keynote d'ouverture, reliant son expérience d'entrepreneur dans l'open source et sa participation (et celle de son entreprise) au projet @jupyter.org
June 16, 2026 at 8:22 AM
Journées Open Source de @insee.fr au lieu de la transformation - @sylvaincorlay.bsky.social de QuantStack fait la keynote d'ouverture, reliant son expérience d'entrepreneur dans l'open source et sa participation (et celle de son entreprise) au projet @jupyter.org
February 19, 2026 at 3:15 PM
Some great work here by the QuantStack team! Improving the Fortran on Wasm ecosystem and better NumPy performance in the browser notebook.link/blog/the-las...
The last mile of a long road: faster NumPy in the browser | Notebook.link
NumPy on Emscripten-forge now links OpenBLAS in WebAssembly, with large speedups for matmul and linear algebra in the browser.
notebook.link
September 21, 2026 at 7:58 AM
Some great work here by the QuantStack team! Improving the Fortran on Wasm ecosystem and better NumPy performance in the browser notebook.link/blog/the-las...
🙌 🎉 🥳 🪅 Congrats to the QuantStack team!! It's been such a privilege to tag along on this work, and I've learned so much from you all! Thank you :)
Announcing JupyterGIS 🌍 🌐 🎉
Real-time collaboration for #GIS workflows with #Jupyter and #QGIS
@qgis.fosstodon.org.ap.brid.gy @jupyter.org
blog.jupyter.org/real-time-co...
Real-time collaboration for #GIS workflows with #Jupyter and #QGIS
@qgis.fosstodon.org.ap.brid.gy @jupyter.org
blog.jupyter.org/real-time-co...
Real-time collaboration and collaborative editing for GIS workflows with Jupyter and QGIS
The QGIS open-source project is a cornerstone in the geosciences ecosystem, providing robust tools for spatial data analysis and…
blog.jupyter.org
February 27, 2025 at 4:04 PM
🙌 🎉 🥳 🪅 Congrats to the QuantStack team!! It's been such a privilege to tag along on this work, and I've learned so much from you all! Thank you :)
We're excited to introduce R-Lite, a #WebAssembly distribution of #R for the browser, allowing you to use the R kernel in JupyterLite!
Read the article by Isabel Paredes, who spearheaded this project at QuantStack, on the @jupyter.org blog:
blog.jupyter.org/r-in-the-bro...
Read the article by Isabel Paredes, who spearheaded this project at QuantStack, on the @jupyter.org blog:
blog.jupyter.org/r-in-the-bro...
R in the Browser: Announcing Our WebAssembly Distribution
R is now available in emscripten-forge, enabling the Xeus-R kernel in JupyterLite
blog.jupyter.org
February 28, 2025 at 10:33 AM
We're excited to introduce R-Lite, a #WebAssembly distribution of #R for the browser, allowing you to use the R kernel in JupyterLite!
Read the article by Isabel Paredes, who spearheaded this project at QuantStack, on the @jupyter.org blog:
blog.jupyter.org/r-in-the-bro...
Read the article by Isabel Paredes, who spearheaded this project at QuantStack, on the @jupyter.org blog:
blog.jupyter.org/r-in-the-bro...
Meet Matthias Meschede, COO at QuantStack, who ensures smooth operations from initial customer contact to solution implementation. He values QuantStack's engineering-led work culture, focusing on automation and creativity, while contributing to impactful open-source projects.
youtu.be/Mxgo3USfE9s
youtu.be/Mxgo3USfE9s
Matthias, COO
YouTube video by QuantStack
youtu.be
May 2, 2025 at 7:15 AM
Meet Matthias Meschede, COO at QuantStack, who ensures smooth operations from initial customer contact to solution implementation. He values QuantStack's engineering-led work culture, focusing on automation and creativity, while contributing to impactful open-source projects.
youtu.be/Mxgo3USfE9s
youtu.be/Mxgo3USfE9s
The Sovereign Tech Agency backs Apache Arrow's Future with QuantStack!
This funding will empower Arrow maintainers at QuantStack, @pitrou.net and @raulcumplido.bsky.social, to advance security, modularity, and long-term sustainability of @arrow.apache.org.
medium.com/@QuantStack/...
This funding will empower Arrow maintainers at QuantStack, @pitrou.net and @raulcumplido.bsky.social, to advance security, modularity, and long-term sustainability of @arrow.apache.org.
medium.com/@QuantStack/...
The Sovereign Tech Agency Invests in Apache Arrow’s Future with QuantStack
We are thrilled to announce that the Sovereign Tech Fund is providing critical funding to sustain and improve Apache Arrow, an essential…
medium.com
October 7, 2025 at 11:40 AM
The Sovereign Tech Agency backs Apache Arrow's Future with QuantStack!
This funding will empower Arrow maintainers at QuantStack, @pitrou.net and @raulcumplido.bsky.social, to advance security, modularity, and long-term sustainability of @arrow.apache.org.
medium.com/@QuantStack/...
This funding will empower Arrow maintainers at QuantStack, @pitrou.net and @raulcumplido.bsky.social, to advance security, modularity, and long-term sustainability of @arrow.apache.org.
medium.com/@QuantStack/...
HUGE congrats to the amazing QuantStack team for their work on releasing JupyterCAD 3.0!!!
I feel so privileged to work with you folks :)
I feel so privileged to work with you folks :)
JupyterCAD 3.0 is here! 🎉
We are excited to announce JupyterCAD 3.0, bringing major improvements to the web-based collaborative CAD editor for JupyterLab:
blog.jupyter.org/announcing-j...
✅ Color Customization
🐍 Embedded Python Console
🎯 Improved UX
🖱️ Mouse-based 3D Controls
🤝 Suggestions Support
We are excited to announce JupyterCAD 3.0, bringing major improvements to the web-based collaborative CAD editor for JupyterLab:
blog.jupyter.org/announcing-j...
✅ Color Customization
🐍 Embedded Python Console
🎯 Improved UX
🖱️ Mouse-based 3D Controls
🤝 Suggestions Support
Announcing JupyterCAD 3.0
The latest iteration of the web-based collaborative CAD editor
blog.jupyter.org
February 19, 2025 at 6:32 PM
HUGE congrats to the amazing QuantStack team for their work on releasing JupyterCAD 3.0!!!
I feel so privileged to work with you folks :)
I feel so privileged to work with you folks :)
@quantstack.bsky.social, an “almost accidental startup,” is building a serverless distro of @jupyter.org for Jupyter’s global adoption.
Feat. @sylvaincorlay.bsky.social
Feat. @sylvaincorlay.bsky.social
Teaching a Billion People to Code: How JupyterLite Is Scaling the Impossible
QuantStack, an “almost accidental startup,” is building a serverless distro of JupyterLab for Jupyter’s global adoption.
bit.ly
December 4, 2025 at 3:30 PM
@quantstack.bsky.social, an “almost accidental startup,” is building a serverless distro of @jupyter.org for Jupyter’s global adoption.
Feat. @sylvaincorlay.bsky.social
Feat. @sylvaincorlay.bsky.social
@geojupyter.bsky.social 's JupyterGIS just got two new features: built-in STAC browsing and Story Maps. Discover #geospatial data and tell map-based stories all from @jupyter.org!
Try it live in your browser: notebook.link/@quantstack/....
Read more on the Project Jupyter Blog: shorturl.at/UXE8s
Try it live in your browser: notebook.link/@quantstack/....
Read more on the Project Jupyter Blog: shorturl.at/UXE8s
Expanding Geospatial Workflows in JupyterGIS: STAC Browsing and Story Maps
Since its initial announcement less than two years ago, JupyterGIS has been a growing effort to bring interactive geospatial workflows into…
shorturl.at
February 24, 2026 at 10:44 AM
@geojupyter.bsky.social 's JupyterGIS just got two new features: built-in STAC browsing and Story Maps. Discover #geospatial data and tell map-based stories all from @jupyter.org!
Try it live in your browser: notebook.link/@quantstack/....
Read more on the Project Jupyter Blog: shorturl.at/UXE8s
Try it live in your browser: notebook.link/@quantstack/....
Read more on the Project Jupyter Blog: shorturl.at/UXE8s
Meet Johan Mabille, a Scientific Computing Developer and Technical Director at QuantStack, who has been instrumental in shaping the company's diverse and impactful projects from day one.
www.youtube.com/watch?v=ZoHJ...
www.youtube.com/watch?v=ZoHJ...
Découvrez QuantStack avec Johan, Scientific Computing Developer
YouTube video by Welcome to the Jungle Solutions
www.youtube.com
April 11, 2025 at 7:28 AM
Meet Johan Mabille, a Scientific Computing Developer and Technical Director at QuantStack, who has been instrumental in shaping the company's diverse and impactful projects from day one.
www.youtube.com/watch?v=ZoHJ...
www.youtube.com/watch?v=ZoHJ...
@quantstack.bsky.social, an “almost accidental startup,” is building a serverless distro of @jupyter.org for Jupyter’s global adoption.
Feat. @sylvaincorlay.bsky.social
Feat. @sylvaincorlay.bsky.social
Teaching a Billion People to Code: How JupyterLite Is Scaling the Impossible
QuantStack, an “almost accidental startup,” is building a serverless distro of JupyterLab for Jupyter’s global adoption.
bit.ly
December 1, 2025 at 11:00 PM
@quantstack.bsky.social, an “almost accidental startup,” is building a serverless distro of @jupyter.org for Jupyter’s global adoption.
Feat. @sylvaincorlay.bsky.social
Feat. @sylvaincorlay.bsky.social
Explore the expansion of geospatial workflows in Jupyter. Gregory Mooney, QuantStack highlights how JupyterGIS is enabling collaborative mapping and spatial analysis within interactive notebooks. #Jupyter #GIS #OpenSource
blog.jupyter.org/expanding-ge...
blog.jupyter.org/expanding-ge...
Expanding Geospatial Workflows in JupyterGIS: STAC Browsing and Story Maps
Since its initial announcement less than two years ago, JupyterGIS has been a growing effort to bring interactive geospatial workflows into…
blog.jupyter.org
April 9, 2026 at 9:23 PM
Explore the expansion of geospatial workflows in Jupyter. Gregory Mooney, QuantStack highlights how JupyterGIS is enabling collaborative mapping and spatial analysis within interactive notebooks. #Jupyter #GIS #OpenSource
blog.jupyter.org/expanding-ge...
blog.jupyter.org/expanding-ge...
Gabriela, UX Designer and Researcher at QuantStack, shares her experience working on open-source projects like Jupyter and JupyterLab, the challenges of collaborating with experts from diverse scientific fields, and the rewarding nature of designing for global impact.
www.youtube.com/watch?v=cGk5...
www.youtube.com/watch?v=cGk5...
Découvrez QuantStack avec Gabriela, UX Designer and Researcher
YouTube video by Welcome to the Jungle Solutions
www.youtube.com
April 4, 2025 at 7:30 AM
Gabriela, UX Designer and Researcher at QuantStack, shares her experience working on open-source projects like Jupyter and JupyterLab, the challenges of collaborating with experts from diverse scientific fields, and the rewarding nature of designing for global impact.
www.youtube.com/watch?v=cGk5...
www.youtube.com/watch?v=cGk5...
We are looking for a part-time CFO to join our lean, collaborative, fast moving, remote (+Paris) team. Interested in taking responsibility?
We particularly value hands-on experience with SMEs, and automation-oriented mindset.
www.welcometothejungle.com/fr/companies...
We particularly value hands-on experience with SMEs, and automation-oriented mindset.
www.welcometothejungle.com/fr/companies...
Part-time CFO - QuantStack - Temps partiel - Télétravail total
QuantStack recrute un(e) Part-time CFO !
www.welcometothejungle.com
December 6, 2024 at 3:44 PM
We are looking for a part-time CFO to join our lean, collaborative, fast moving, remote (+Paris) team. Interested in taking responsibility?
We particularly value hands-on experience with SMEs, and automation-oriented mindset.
www.welcometothejungle.com/fr/companies...
We particularly value hands-on experience with SMEs, and automation-oriented mindset.
www.welcometothejungle.com/fr/companies...
It's public for everyone to use, and it's powered by free / open source software that we at QuantStack actively contribute to.
(note: I didn't work on this)
(note: I didn't work on this)
We are thrilled to introduce notebook.link, a platform that lets you create, share, and run Jupyter notebooks instantly in your browser.
Powered by JupyterLite and WebAssembly, it supports Python, R, C++, and a full in-browser terminal experience.
📖 Read the full story: medium.com/@QuantStack/...
Powered by JupyterLite and WebAssembly, it supports Python, R, C++, and a full in-browser terminal experience.
📖 Read the full story: medium.com/@QuantStack/...
Notebook.link
notebook.link
January 23, 2026 at 9:03 AM
It's public for everyone to use, and it's powered by free / open source software that we at QuantStack actively contribute to.
(note: I didn't work on this)
(note: I didn't work on this)
📢 Talk Announcement
"xeus-cpp, the new C++ kernel for Jupyter", by Johan Mabille and Anutosh Bhat from Quantstack.
📜 Talk info: pretalx.com/pydata-paris-2025/talk/HRLACQ
📅 Schedule: pydata.org/paris2025/schedule
🎟 Tickets: pydata.org/paris2025/tickets"
"xeus-cpp, the new C++ kernel for Jupyter", by Johan Mabille and Anutosh Bhat from Quantstack.
📜 Talk info: pretalx.com/pydata-paris-2025/talk/HRLACQ
📅 Schedule: pydata.org/paris2025/schedule
🎟 Tickets: pydata.org/paris2025/tickets"
August 6, 2025 at 7:00 AM
📢 Talk Announcement
"xeus-cpp, the new C++ kernel for Jupyter", by Johan Mabille and Anutosh Bhat from Quantstack.
📜 Talk info: pretalx.com/pydata-paris-2025/talk/HRLACQ
📅 Schedule: pydata.org/paris2025/schedule
🎟 Tickets: pydata.org/paris2025/tickets"
"xeus-cpp, the new C++ kernel for Jupyter", by Johan Mabille and Anutosh Bhat from Quantstack.
📜 Talk info: pretalx.com/pydata-paris-2025/talk/HRLACQ
📅 Schedule: pydata.org/paris2025/schedule
🎟 Tickets: pydata.org/paris2025/tickets"
Discover the journey of Meriem Ben Ismail, software engineer at QuantStack. She shares her contributions to open-source projects like JupyterLab and Jupyter Notebook. Her story highlights QuantStack's collaborative culture and the impact QS has on the DS community.
- YouTube
Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.
www.youtube.com
April 25, 2025 at 7:00 AM
Discover the journey of Meriem Ben Ismail, software engineer at QuantStack. She shares her contributions to open-source projects like JupyterLab and Jupyter Notebook. Her story highlights QuantStack's collaborative culture and the impact QS has on the DS community.
🏅We are thrilled to announce that @quantstack.bsky.social has been honored with the "Acteurs du Libre 2024" award by CNLL at the Open Source Experience conference.
This is a recognition of our commitment to free software and our work on Jupyter, Conda-forge, and Projects of the PyData ecosystem.
This is a recognition of our commitment to free software and our work on Jupyter, Conda-forge, and Projects of the PyData ecosystem.
December 5, 2024 at 10:18 PM
🏅We are thrilled to announce that @quantstack.bsky.social has been honored with the "Acteurs du Libre 2024" award by CNLL at the Open Source Experience conference.
This is a recognition of our commitment to free software and our work on Jupyter, Conda-forge, and Projects of the PyData ecosystem.
This is a recognition of our commitment to free software and our work on Jupyter, Conda-forge, and Projects of the PyData ecosystem.