David Brochart
@davidbrochart.bsky.social
Better not to start, once begun better to finish.
Pinned
David Brochart
@davidbrochart.bsky.social
· Aug 11
Microverse: Jupyverse in the browser
A new take on in-browser JupyterLab
david-brochart.medium.com
I wrote a blog post about Microverse, a new in-browser JupyterLab.
david-brochart.medium.com/microverse-j...
david-brochart.medium.com/microverse-j...
Here's one pointer: a notebook shared model has a shared text for an input cell.
github.com/jupyter-serv...
That allows multiple users to type into the cell at the same time. It's a CRDT so conflicts are resolved automatically in real-time. That's how collaboration works in Jupyter. AI could use it.
github.com/jupyter-serv...
That allows multiple users to type into the cell at the same time. It's a CRDT so conflicts are resolved automatically in real-time. That's how collaboration works in Jupyter. AI could use it.
jupyter_ydoc/jupyter_ydoc/ynotebook.py at 654e8f80f619c7820dd82dfbe3c6d985b6a69e28 · jupyter-server/jupyter_ydoc
Jupyter document structures for collaborative editing using Yjs/pycrdt - jupyter-server/jupyter_ydoc
github.com
January 15, 2026 at 1:25 PM
Here's one pointer: a notebook shared model has a shared text for an input cell.
github.com/jupyter-serv...
That allows multiple users to type into the cell at the same time. It's a CRDT so conflicts are resolved automatically in real-time. That's how collaboration works in Jupyter. AI could use it.
github.com/jupyter-serv...
That allows multiple users to type into the cell at the same time. It's a CRDT so conflicts are resolved automatically in real-time. That's how collaboration works in Jupyter. AI could use it.
No, I think most Jupyter AI extensions' workflow is rather to treat the AI as a collaborator and use the real-time collaboration system to modify the shared model of the notebook, not the underlying JSON directly.
January 15, 2026 at 11:58 AM
No, I think most Jupyter AI extensions' workflow is rather to treat the AI as a collaborator and use the real-time collaboration system to modify the shared model of the notebook, not the underlying JSON directly.
Jupyter has integrated AI in the notebook's environment. I think @willmcgugan.bsky.social's Toad is doing the other way around: integrating the notebook in the AI environment.
January 15, 2026 at 11:34 AM
Jupyter has integrated AI in the notebook's environment. I think @willmcgugan.bsky.social's Toad is doing the other way around: integrating the notebook in the AI environment.
Reposted by David Brochart
I've added a tree view to pick files in Toad. 🐸
Fuzzy searching is great when you know what you're looking for. But a tree view is more natural when you want to look through your files.
Toad is a unified interface for agentic coding, and all things AI, in your terminal.
github.com/batrachianai...
Fuzzy searching is great when you know what you're looking for. But a tree view is more natural when you want to look through your files.
Toad is a unified interface for agentic coding, and all things AI, in your terminal.
github.com/batrachianai...
December 28, 2025 at 10:53 AM
I've added a tree view to pick files in Toad. 🐸
Fuzzy searching is great when you know what you're looking for. But a tree view is more natural when you want to look through your files.
Toad is a unified interface for agentic coding, and all things AI, in your terminal.
github.com/batrachianai...
Fuzzy searching is great when you know what you're looking for. But a tree view is more natural when you want to look through your files.
Toad is a unified interface for agentic coding, and all things AI, in your terminal.
github.com/batrachianai...
Reposted by David Brochart
Alrighty. The Toad is out of the bag. 👜🐸
Install toad to work with a variety of #AI coding agents with one beautiful terminal interface.
I've been told I'm very authentic on camera. You just can't fake that kind of awkwardness.
#AI #Python #Toad
www.youtube.com/shorts/ZLhct...
Install toad to work with a variety of #AI coding agents with one beautiful terminal interface.
I've been told I'm very authentic on camera. You just can't fake that kind of awkwardness.
#AI #Python #Toad
www.youtube.com/shorts/ZLhct...
December 18, 2025 at 4:22 PM
Alrighty. The Toad is out of the bag. 👜🐸
Install toad to work with a variety of #AI coding agents with one beautiful terminal interface.
I've been told I'm very authentic on camera. You just can't fake that kind of awkwardness.
#AI #Python #Toad
www.youtube.com/shorts/ZLhct...
Install toad to work with a variety of #AI coding agents with one beautiful terminal interface.
I've been told I'm very authentic on camera. You just can't fake that kind of awkwardness.
#AI #Python #Toad
www.youtube.com/shorts/ZLhct...
Can't wait for the release!
December 16, 2025 at 9:05 PM
Can't wait for the release!
Seeing these ".." getting smaller, it seems to me your're using Ghostty 😃
December 12, 2025 at 3:41 PM
Seeing these ".." getting smaller, it seems to me your're using Ghostty 😃
Reposted by David Brochart
I recorded a video about a new feature I added to Toad...
Toad will detect "dangerous" shell commands in bash commands.
Toad will detect "dangerous" shell commands in bash commands.
December 12, 2025 at 3:29 PM
I recorded a video about a new feature I added to Toad...
Toad will detect "dangerous" shell commands in bash commands.
Toad will detect "dangerous" shell commands in bash commands.
Reposted by David Brochart
New blog post exploring a GPU-accelerated Zarr: tomaugspurger.net/posts/gpu-ac...
GPU-Accelerated Zarr
This post gives detailed background to my PyData Global talk, “GPU-Accelerated
Zarr” (slides, and I’ll share the video when it’s up in a couple months). It
deliberately gets into the weeds, but I will...
tomaugspurger.net
December 11, 2025 at 5:41 PM
New blog post exploring a GPU-accelerated Zarr: tomaugspurger.net/posts/gpu-ac...
Looks like mistral-vibe uses Textual. Will it be outdated after @willmcgugan.bsky.social's Toad?
github.com/mistralai/mi...
github.com/mistralai/mi...
GitHub - mistralai/mistral-vibe: Minimal CLI coding agent by Mistral
Minimal CLI coding agent by Mistral. Contribute to mistralai/mistral-vibe development by creating an account on GitHub.
github.com
December 10, 2025 at 7:50 AM
Looks like mistral-vibe uses Textual. Will it be outdated after @willmcgugan.bsky.social's Toad?
github.com/mistralai/mi...
github.com/mistralai/mi...
I wrote a blog post about switching from SQL to CRDT.
david-brochart.medium.com/goodbye-sql-...
david-brochart.medium.com/goodbye-sql-...
Goodbye SQL, hello CRDT!
Sometimes we use abbreviations so often we don’t remember what they stand for. And sometimes we use a particular technology just because…
david-brochart.medium.com
December 1, 2025 at 2:42 PM
I wrote a blog post about switching from SQL to CRDT.
david-brochart.medium.com/goodbye-sql-...
david-brochart.medium.com/goodbye-sql-...
FPS is a framework for running asynchronous applications.
Thanks to its borrow checker, async resources can be shared safely. They are torn down when all borrowers have dropped their reference, making sure no "dangling" resource is used.
This is very much inspired by Rust.
github.com/jupyter-serv...
Thanks to its borrow checker, async resources can be shared safely. They are torn down when all borrowers have dropped their reference, making sure no "dangling" resource is used.
This is very much inspired by Rust.
github.com/jupyter-serv...
GitHub - jupyter-server/fps: Fast Pluggable System
Fast Pluggable System. Contribute to jupyter-server/fps development by creating an account on GitHub.
github.com
November 17, 2025 at 10:28 AM
FPS is a framework for running asynchronous applications.
Thanks to its borrow checker, async resources can be shared safely. They are torn down when all borrowers have dropped their reference, making sure no "dangling" resource is used.
This is very much inspired by Rust.
github.com/jupyter-serv...
Thanks to its borrow checker, async resources can be shared safely. They are torn down when all borrowers have dropped their reference, making sure no "dangling" resource is used.
This is very much inspired by Rust.
github.com/jupyter-serv...
Too bad it's hard-coded to use asyncio.
November 7, 2025 at 9:37 AM
Too bad it's hard-coded to use asyncio.
I started WireDB, a new database built on top of CRDTs.
davidbrochart.github.io/wiredb
davidbrochart.github.io/wiredb
wiredb
Distributed database based on CRDTs
davidbrochart.github.io
October 26, 2025 at 8:10 AM
I started WireDB, a new database built on top of CRDTs.
davidbrochart.github.io/wiredb
davidbrochart.github.io/wiredb
Pycrdt 0.12.40 is out with Python 3.14 support.
October 8, 2025 at 8:32 AM
Pycrdt 0.12.40 is out with Python 3.14 support.
Wondering what @simonwillison.net is building with pycrdt: simonwillison.net/2025/Oct/5/p...
Embracing the parallel coding agent lifestyle
For a while now I’ve been hearing from engineers who run multiple coding agents at once—firing up several Claude Code or Codex CLI instances at the same time, sometimes in …
simonwillison.net
October 6, 2025 at 11:40 AM
Wondering what @simonwillison.net is building with pycrdt: simonwillison.net/2025/Oct/5/p...
Reposted by David Brochart
Put some final touches to Toad's permission request screen.
When the agent has an update, it pops this screen up. You can review the diffs in unified or split view, then decide if you want to accept or reject the changes.
Watch this space!
When the agent has an update, it pops this screen up. You can review the diffs in unified or split view, then decide if you want to accept or reject the changes.
Watch this space!
September 22, 2025 at 9:05 PM
Put some final touches to Toad's permission request screen.
When the agent has an update, it pops this screen up. You can review the diffs in unified or split view, then decide if you want to accept or reject the changes.
Watch this space!
When the agent has an update, it pops this screen up. You can review the diffs in unified or split view, then decide if you want to accept or reject the changes.
Watch this space!
September 17, 2025 at 12:09 PM
Reposted by David Brochart
📢 Talk Announcement
"Open-source Business", by @sylvaincorlay.bsky.social from @quantstack.bsky.social and @ylechelle.bsky.social from @probabl.ai
📜 Talk info: pretalx.com/pydata-paris-2025/talk/LMTCZS
📅 Schedule: pydata.org/paris2025/schedule
🎟 Tickets: pydata.org/paris2025/tickets
"Open-source Business", by @sylvaincorlay.bsky.social from @quantstack.bsky.social and @ylechelle.bsky.social from @probabl.ai
📜 Talk info: pretalx.com/pydata-paris-2025/talk/LMTCZS
📅 Schedule: pydata.org/paris2025/schedule
🎟 Tickets: pydata.org/paris2025/tickets
September 12, 2025 at 7:00 AM
📢 Talk Announcement
"Open-source Business", by @sylvaincorlay.bsky.social from @quantstack.bsky.social and @ylechelle.bsky.social from @probabl.ai
📜 Talk info: pretalx.com/pydata-paris-2025/talk/LMTCZS
📅 Schedule: pydata.org/paris2025/schedule
🎟 Tickets: pydata.org/paris2025/tickets
"Open-source Business", by @sylvaincorlay.bsky.social from @quantstack.bsky.social and @ylechelle.bsky.social from @probabl.ai
📜 Talk info: pretalx.com/pydata-paris-2025/talk/LMTCZS
📅 Schedule: pydata.org/paris2025/schedule
🎟 Tickets: pydata.org/paris2025/tickets
It's better to open a private window, and you should be aware that it doesn't work on
Firefox because of bugzilla.mozilla.org/show_bug.cgi....
If it still doesn't work, it would be great if you could open an issue.
Firefox because of bugzilla.mozilla.org/show_bug.cgi....
If it still doesn't work, it would be great if you could open an issue.
1387483 - [meta] Support ReadableStream as Request.body in fetch API
NEW (nobody) in Core - DOM: Networking. Last updated 2025-09-09.
bugzilla.mozilla.org
September 11, 2025 at 12:23 PM
It's better to open a private window, and you should be aware that it doesn't work on
Firefox because of bugzilla.mozilla.org/show_bug.cgi....
If it still doesn't work, it would be great if you could open an issue.
Firefox because of bugzilla.mozilla.org/show_bug.cgi....
If it still doesn't work, it would be great if you could open an issue.
They are really different approaches and Microverse is nowhere near JupyterLite for now. I think it's really a question of integration with the rest of the ecosystem. JupyterLite diverges in many ways from JupyterLab due to the lack of server while Microverse is more streamlined and more compatible.
September 11, 2025 at 12:20 PM
They are really different approaches and Microverse is nowhere near JupyterLite for now. I think it's really a question of integration with the rest of the ecosystem. JupyterLite diverges in many ways from JupyterLab due to the lack of server while Microverse is more streamlined and more compatible.
I gave a presentation of Microverse during the last Jupyter Community Call:
youtu.be/Nx1j3NB-GnI?...
Microverse is a version of JupyterLab that runs entirely in the browser. Unlike JupyterLite, it runs a server in the browser.
You can read more about it in this blog post:
medium.com/@david-broch...
youtu.be/Nx1j3NB-GnI?...
Microverse is a version of JupyterLab that runs entirely in the browser. Unlike JupyterLite, it runs a server in the browser.
You can read more about it in this blog post:
medium.com/@david-broch...
Jupyter Community Call - September 04, 2025
YouTube video by Project Jupyter
youtu.be
September 11, 2025 at 11:49 AM
I gave a presentation of Microverse during the last Jupyter Community Call:
youtu.be/Nx1j3NB-GnI?...
Microverse is a version of JupyterLab that runs entirely in the browser. Unlike JupyterLite, it runs a server in the browser.
You can read more about it in this blog post:
medium.com/@david-broch...
youtu.be/Nx1j3NB-GnI?...
Microverse is a version of JupyterLab that runs entirely in the browser. Unlike JupyterLite, it runs a server in the browser.
You can read more about it in this blog post:
medium.com/@david-broch...
It's nice to see pycrdt powers a pretty popular project (outside Jupyter):
docs.openwebui.com
docs.openwebui.com
🏡 Home | Open WebUI
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform designed to operate entirely offline. It supports various LLM runners like Ollama and OpenAI-compatible APIs, with ...
docs.openwebui.com
September 4, 2025 at 8:23 PM
It's nice to see pycrdt powers a pretty popular project (outside Jupyter):
docs.openwebui.com
docs.openwebui.com