Sylvain Corlay
@sylvaincorlay.bsky.social
@QuantStack.bsky.social founder
@jupyter.org maintainer
@computeparis.bsky.social organizer
ACM software system award 2017.
@jupyter.org maintainer
@computeparis.bsky.social organizer
ACM software system award 2017.
Reposted by Sylvain Corlay
Announcing JupyterGIS 0.16.0! 🤩 👋
blog.jupyter.org/jupytergis-0...
We are excited to show you everything we've been building for the past months:
- improved story-maps look and editor
- a new Grammar Of Graphics symbology
- openEO support
- a new R API
@jupyter.org @geojupyter.bsky.social
blog.jupyter.org/jupytergis-0...
We are excited to show you everything we've been building for the past months:
- improved story-maps look and editor
- a new Grammar Of Graphics symbology
- openEO support
- a new R API
@jupyter.org @geojupyter.bsky.social
August 24, 2026 at 4:25 PM
Announcing JupyterGIS 0.16.0! 🤩 👋
blog.jupyter.org/jupytergis-0...
We are excited to show you everything we've been building for the past months:
- improved story-maps look and editor
- a new Grammar Of Graphics symbology
- openEO support
- a new R API
@jupyter.org @geojupyter.bsky.social
blog.jupyter.org/jupytergis-0...
We are excited to show you everything we've been building for the past months:
- improved story-maps look and editor
- a new Grammar Of Graphics symbology
- openEO support
- a new R API
@jupyter.org @geojupyter.bsky.social
Reposted by Sylvain Corlay
Congratulations to the JupyterGIS and GeoJupyter team. The paper "JupyterGIS: A Collaborative GIS Environment for JupyterLab" was just published into JOSS.
@geojupyter.bsky.social, @martinrenou.bsky.social, @annefouilloux.bsky.social, @mfisher87.bsky.social, @arjxn-py.bsky.social
@geojupyter.bsky.social, @martinrenou.bsky.social, @annefouilloux.bsky.social, @mfisher87.bsky.social, @arjxn-py.bsky.social
Just published in JOSS: 'JupyterGIS: A Collaborative GIS Environment for JupyterLab' https://doi.org/10.21105/joss.10383
August 19, 2026 at 8:41 PM
Congratulations to the JupyterGIS and GeoJupyter team. The paper "JupyterGIS: A Collaborative GIS Environment for JupyterLab" was just published into JOSS.
@geojupyter.bsky.social, @martinrenou.bsky.social, @annefouilloux.bsky.social, @mfisher87.bsky.social, @arjxn-py.bsky.social
@geojupyter.bsky.social, @martinrenou.bsky.social, @annefouilloux.bsky.social, @mfisher87.bsky.social, @arjxn-py.bsky.social
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...
Reposted by Sylvain Corlay
Numba now runs entirely in the browser through #JupyterLite and emscripten-forge 🤘
Read Anutosh's post for more details on how we brought Numba's JIT compiler to #WebAssembly, enabling a broader ecosystem including PyTensor, PyMC, Interpolation․py, and Dolo․py.
notebook.link/blog/numba-i...
Read Anutosh's post for more details on how we brought Numba's JIT compiler to #WebAssembly, enabling a broader ecosystem including PyTensor, PyMC, Interpolation․py, and Dolo․py.
notebook.link/blog/numba-i...
Numba in the Browser: Unlocking a New Scientific Python Stack in JupyterLite | Notebook.link Documentation
A JIT compiler and its scientific Python ecosystem running entirely in the Web browser
notebook.link
August 12, 2026 at 10:02 AM
Numba now runs entirely in the browser through #JupyterLite and emscripten-forge 🤘
Read Anutosh's post for more details on how we brought Numba's JIT compiler to #WebAssembly, enabling a broader ecosystem including PyTensor, PyMC, Interpolation․py, and Dolo․py.
notebook.link/blog/numba-i...
Read Anutosh's post for more details on how we brought Numba's JIT compiler to #WebAssembly, enabling a broader ecosystem including PyTensor, PyMC, Interpolation․py, and Dolo․py.
notebook.link/blog/numba-i...
Reposted by Sylvain Corlay
The Compute! Paris 2026 Schedule is Live!
We’re thrilled to unveil the official schedule for Compute! Paris 2026, and we couldn’t be prouder of our first edition’s incredible lineup!
We’re thrilled to unveil the official schedule for Compute! Paris 2026, and we couldn’t be prouder of our first edition’s incredible lineup!
August 6, 2026 at 8:46 AM
The Compute! Paris 2026 Schedule is Live!
We’re thrilled to unveil the official schedule for Compute! Paris 2026, and we couldn’t be prouder of our first edition’s incredible lineup!
We’re thrilled to unveil the official schedule for Compute! Paris 2026, and we couldn’t be prouder of our first edition’s incredible lineup!
Reposted by Sylvain Corlay
JupyterLite 0.8 is released! 🎉
This release updates to the latest JupyterLab 4.6 and Notebook 7.6, and brings new improvements across related projects.
➡️ Try it online: jupyter.org/try-jupyter
➡️ Blog post: blog.jupyter.org/jupyterlite-...
This release updates to the latest JupyterLab 4.6 and Notebook 7.6, and brings new improvements across related projects.
➡️ Try it online: jupyter.org/try-jupyter
➡️ Blog post: blog.jupyter.org/jupyterlite-...
JupyterLite 0.8 is released! 🎉
JupyterLite is a Jupyter distribution that runs entirely in the web browser without any server components. Deployment and hosting are easy…
blog.jupyter.org
July 10, 2026 at 6:13 AM
JupyterLite 0.8 is released! 🎉
This release updates to the latest JupyterLab 4.6 and Notebook 7.6, and brings new improvements across related projects.
➡️ Try it online: jupyter.org/try-jupyter
➡️ Blog post: blog.jupyter.org/jupyterlite-...
This release updates to the latest JupyterLab 4.6 and Notebook 7.6, and brings new improvements across related projects.
➡️ Try it online: jupyter.org/try-jupyter
➡️ Blog post: blog.jupyter.org/jupyterlite-...
Reposted by Sylvain Corlay
Congratulations to the newest batch of Jupyter Distinguished Contributors, James Colliander, Florence Haudin, Gregory Mooney, and Kirstie Whitaker.
The Jupyter community thanks you for your effort to advance Project Jupyter, and for leading by example!
blog.jupyter.org/congratulati...
The Jupyter community thanks you for your effort to advance Project Jupyter, and for leading by example!
blog.jupyter.org/congratulati...
Congratulations, Distinguished Contributors!
We are proud to announce the recipients of the Jupyter Distinguished Contributor (JDC) award for the 2025 cohort of contributors.
blog.jupyter.org
June 25, 2026 at 11:19 AM
Congratulations to the newest batch of Jupyter Distinguished Contributors, James Colliander, Florence Haudin, Gregory Mooney, and Kirstie Whitaker.
The Jupyter community thanks you for your effort to advance Project Jupyter, and for leading by example!
blog.jupyter.org/congratulati...
The Jupyter community thanks you for your effort to advance Project Jupyter, and for leading by example!
blog.jupyter.org/congratulati...
Reposted by Sylvain Corlay
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
Reposted by Sylvain Corlay
New SIMD improvements make Parquet column reads up to 80% faster on baseline ARM64 and SVE. Shipping with @arrow.apache.org 25.0.
Work done @quantstack.bsky.social with support from a generous sponsor.
medium.com/@AntoineProu...
Work done @quantstack.bsky.social with support from a generous sponsor.
medium.com/@AntoineProu...
June 11, 2026 at 3:18 PM
New SIMD improvements make Parquet column reads up to 80% faster on baseline ARM64 and SVE. Shipping with @arrow.apache.org 25.0.
Work done @quantstack.bsky.social with support from a generous sponsor.
medium.com/@AntoineProu...
Work done @quantstack.bsky.social with support from a generous sponsor.
medium.com/@AntoineProu...
Reposted by Sylvain Corlay
Compute! Paris 2026 Sprints on Nov 27!
We’re excited to announce a full day of coding, collaboration, and open-source contributions in scientific computing. Hosted by SCAI, our community partner. scai.sorbonne-universite.fr
Learn more: compute.events/paris2026/sprints.html
We’re excited to announce a full day of coding, collaboration, and open-source contributions in scientific computing. Hosted by SCAI, our community partner. scai.sorbonne-universite.fr
Learn more: compute.events/paris2026/sprints.html
June 10, 2026 at 1:30 PM
Compute! Paris 2026 Sprints on Nov 27!
We’re excited to announce a full day of coding, collaboration, and open-source contributions in scientific computing. Hosted by SCAI, our community partner. scai.sorbonne-universite.fr
Learn more: compute.events/paris2026/sprints.html
We’re excited to announce a full day of coding, collaboration, and open-source contributions in scientific computing. Hosted by SCAI, our community partner. scai.sorbonne-universite.fr
Learn more: compute.events/paris2026/sprints.html
Reposted by Sylvain Corlay
June 5, 2026 at 1:09 PM
⚠️There are only a few days left to submit your proposal to Compute! Paris 2026.
🗓️ Cfp closes on Sunday (June 7th).
🔗 compute.events/paris2026/
🗓️ Cfp closes on Sunday (June 7th).
🔗 compute.events/paris2026/
Compute! Paris 2026
Understanding your tools and algorithms is what gives you agency in a digital world. Paris, November 25–26, 2026.
compute.events
June 4, 2026 at 7:28 AM
⚠️There are only a few days left to submit your proposal to Compute! Paris 2026.
🗓️ Cfp closes on Sunday (June 7th).
🔗 compute.events/paris2026/
🗓️ Cfp closes on Sunday (June 7th).
🔗 compute.events/paris2026/
Reposted by Sylvain Corlay
Wolf Vollprecht, founder of Prefix.dev, creator of mamba & pixi, and conda-forge core maintainer, is keynoting Compute! Paris 2026!
Hear his vision for the future of open-source tooling, performance, and data science infrastructure.
Hear his vision for the future of open-source tooling, performance, and data science infrastructure.
May 22, 2026 at 10:16 AM
Wolf Vollprecht, founder of Prefix.dev, creator of mamba & pixi, and conda-forge core maintainer, is keynoting Compute! Paris 2026!
Hear his vision for the future of open-source tooling, performance, and data science infrastructure.
Hear his vision for the future of open-source tooling, performance, and data science infrastructure.
Reposted by Sylvain Corlay
Mackenzie Mathis (EPFL neuroscientist, DeepLabCut & CEBRA co-creator and open science pioneer) is keynoting at Compute! Paris 2026!
Her tools (used by 1000s of labs) decode behavior & neural activity.
She explores adaptive intelligence, how brains and machines learn in a changing world.
Her tools (used by 1000s of labs) decode behavior & neural activity.
She explores adaptive intelligence, how brains and machines learn in a changing world.
May 20, 2026 at 2:38 PM
Mackenzie Mathis (EPFL neuroscientist, DeepLabCut & CEBRA co-creator and open science pioneer) is keynoting at Compute! Paris 2026!
Her tools (used by 1000s of labs) decode behavior & neural activity.
She explores adaptive intelligence, how brains and machines learn in a changing world.
Her tools (used by 1000s of labs) decode behavior & neural activity.
She explores adaptive intelligence, how brains and machines learn in a changing world.
Reposted by Sylvain Corlay
We added top-level await support to xeus-python 🚀
You can now use toplevel async code directly in notebooks without extra boilerplate — and without blocking the kernel.
Available with xeus-python 0.19.0
Here is a short blog post about how it works:
notebook.link/@DerThorsten...
You can now use toplevel async code directly in notebooks without extra boilerplate — and without blocking the kernel.
Available with xeus-python 0.19.0
Here is a short blog post about how it works:
notebook.link/@DerThorsten...
Notebook.link - Run & Share Jupyter Notebooks Instantly
A fully interactive, scalable, and language-agnostic computing environment that operates entirely in your browser. Supports Python, R, C++, and GNU Octave. Share a link — anyone can run it instantly.
notebook.link
May 8, 2026 at 8:56 AM
We added top-level await support to xeus-python 🚀
You can now use toplevel async code directly in notebooks without extra boilerplate — and without blocking the kernel.
Available with xeus-python 0.19.0
Here is a short blog post about how it works:
notebook.link/@DerThorsten...
You can now use toplevel async code directly in notebooks without extra boilerplate — and without blocking the kernel.
Available with xeus-python 0.19.0
Here is a short blog post about how it works:
notebook.link/@DerThorsten...
Reposted by Sylvain Corlay
📣 We are delighted to release mamba 2.6.0. 📣
This minor version includes the support for sharded repodata, significantly improving the UX of the project.
🔗 Read more about improvements on this blog post:
medium.com/@julien.jerp...
🔗 For a full overview for the change:
github.com/mamba-org/ma...
This minor version includes the support for sharded repodata, significantly improving the UX of the project.
🔗 Read more about improvements on this blog post:
medium.com/@julien.jerp...
🔗 For a full overview for the change:
github.com/mamba-org/ma...
Sharded Repodata Support in Mamba
Introduction: conda packages metadata indexing
medium.com
April 29, 2026 at 2:09 PM
📣 We are delighted to release mamba 2.6.0. 📣
This minor version includes the support for sharded repodata, significantly improving the UX of the project.
🔗 Read more about improvements on this blog post:
medium.com/@julien.jerp...
🔗 For a full overview for the change:
github.com/mamba-org/ma...
This minor version includes the support for sharded repodata, significantly improving the UX of the project.
🔗 Read more about improvements on this blog post:
medium.com/@julien.jerp...
🔗 For a full overview for the change:
github.com/mamba-org/ma...
Reposted by Sylvain Corlay
Pixi is gaining traction fast in robotics, so we built a dedicated landing page to help roboticists get up and running quickly.
pixi.prefix.dev/latest/robo...
#ROS #robotics
pixi.prefix.dev/latest/robo...
#ROS #robotics
April 28, 2026 at 9:04 AM
Pixi is gaining traction fast in robotics, so we built a dedicated landing page to help roboticists get up and running quickly.
pixi.prefix.dev/latest/robo...
#ROS #robotics
pixi.prefix.dev/latest/robo...
#ROS #robotics
Reposted by Sylvain Corlay
Biologists, city planners, physicists, and engineers... What do they have in common? At Compute! Paris 2026 (Nov 25-26), they’re solving the same data challenges from different angles. Join the conversation!
compute.events/paris2026/
#ComputeParis
compute.events/paris2026/
#ComputeParis
Compute! Paris 2026
Understanding your tools and algorithms is what gives you agency in a digital world. Paris, November 25–26, 2026.
compute.events
April 28, 2026 at 7:50 AM
Biologists, city planners, physicists, and engineers... What do they have in common? At Compute! Paris 2026 (Nov 25-26), they’re solving the same data challenges from different angles. Join the conversation!
compute.events/paris2026/
#ComputeParis
compute.events/paris2026/
#ComputeParis
Reposted by Sylvain Corlay
Compute! is a new conference series built on the idea that data professions need transparency, not black boxes. It connects open-source maintainers with users, fostering collaboration across disciplines.
The first event will happen in Paris in November, and the CfP is open! compute.events/paris2026/
The first event will happen in Paris in November, and the CfP is open! compute.events/paris2026/
Compute! Paris 2026
Understanding your tools and algorithms is what gives you agency in a digital world. Paris, November 25–26, 2026.
compute.events
April 23, 2026 at 1:58 PM
Compute! is a new conference series built on the idea that data professions need transparency, not black boxes. It connects open-source maintainers with users, fostering collaboration across disciplines.
The first event will happen in Paris in November, and the CfP is open! compute.events/paris2026/
The first event will happen in Paris in November, and the CfP is open! compute.events/paris2026/
Reposted by Sylvain Corlay
The team of JupyterCon 2023, PyData Paris 2024 & 2025 organizes a new conference named Compute! Paris 2026 on open source computation and data. The event will take place on November 25–26, 2026 at Sorbonne Université in Paris.
CfP deadline: May 24, 2026: compute.events/paris2026/cf...
CfP deadline: May 24, 2026: compute.events/paris2026/cf...
Call for Proposals — Compute! Paris 2026
Submit your talk proposal for Compute! Paris 2026. The Call for Proposals is open from April 15th to May 24th, 2026.
compute.events
April 21, 2026 at 9:49 AM
The team of JupyterCon 2023, PyData Paris 2024 & 2025 organizes a new conference named Compute! Paris 2026 on open source computation and data. The event will take place on November 25–26, 2026 at Sorbonne Université in Paris.
CfP deadline: May 24, 2026: compute.events/paris2026/cf...
CfP deadline: May 24, 2026: compute.events/paris2026/cf...
Reposted by Sylvain Corlay
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...
Reposted by Sylvain Corlay
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/...
Reposted by Sylvain Corlay
The notebook.link team is building "serverless scientific computing" on top of the modern Conda ecosystem & the prefix.dev package server. Read the guest blog on how they shipped interactive WASM for Python, R, C++, Fortran and more: prefix.dev/blog/server...
How notebook.link Scales Without Backends
Notebook.link combines WebAssembly and the conda ecosystem to deliver scalable, serverless computing environments that run entirely in the browser. No backend. No scaling headaches. Just instant, collaborative scientific computing for everyone.
prefix.dev
March 27, 2026 at 4:19 PM
The notebook.link team is building "serverless scientific computing" on top of the modern Conda ecosystem & the prefix.dev package server. Read the guest blog on how they shipped interactive WASM for Python, R, C++, Fortran and more: prefix.dev/blog/server...
Reposted by Sylvain Corlay
Dive into our rewrite of a low-level algorithm in @arrow.apache.org using C++ metaprogramming that improves the performance of #Parquet reading by up to 50-60%. Impressive work done mostly by @antoineprv.bsky.social
1/ Highly understandable overview at medium.com/@AntoineProu...
1/ Highly understandable overview at medium.com/@AntoineProu...
Faster Reads for Apache Parquet: Improving Integer Unpacking
By rewriting the SIMD optimizations of a critical low-level algorithm in Arrow C++, we have been able to deliver substantial speedups when…
medium.com
March 17, 2026 at 8:29 AM
Dive into our rewrite of a low-level algorithm in @arrow.apache.org using C++ metaprogramming that improves the performance of #Parquet reading by up to 50-60%. Impressive work done mostly by @antoineprv.bsky.social
1/ Highly understandable overview at medium.com/@AntoineProu...
1/ Highly understandable overview at medium.com/@AntoineProu...