It is the first open-source solution featuring true 2D math input combined with powerful syntax sugar and the fastest granular interactive evaluation engine, making it ideal for advanced mathematical workflows, scientific computing, and data exploration.
The notebook combines live code in WL, JS, Mermaid and many more, GUI blocks for user input, equations, narrative text, visualizations, interactive widgets.
WLJS Notebook is free software based on the Wolfram Engine.
You don’t need Mathematica installed to use WLJS Notebook. No subscription required—just a one-time registration at wolfram.com for personal use.
See the license agreement for commercial use.
- Documentation & Tutorials 📔
- Freeware Wolfram Language Interpreter
- Wolfram Language Introduction 🐺
- Github Discussions 💬
- Telegram Support Chat 🐴
Recommended Wolfram Engine: Version > 13.3
The algorithms, functions, and other components of the Wolfram Language provided by the Wolfram Engine are the intellectual property of Wolfram Research, Inc.
As an independent open-source project, we’re unaffiliated with Wolfram or any company. Your support keeps this project alive:
- +1 ⭐️ on this Github repo
- Share it with your colleague
- Buy us a coffee ☕️
Free code signing on Windows provided by SignPath.io, certificate by SignPath Foundation
Pages featuring real-world problems solved using WLJS Notebook, published as interactive notebooks running in your browser.
Notebooks presented as static web pages showcasing various examples demonstrating the power of Wolfram Language and our frontend.
WLJS Notebook is compatible with Wolfram Mathematica and has a flat and minimal notebook structure like in Jupyter Lab. All power of Wolfram Language standard library is at your hands
More than 200 importers/exporters formats. Vast standard library of Wolfram Mathematica (Language) for every computational need, from data analysis to visualization, symbolic computation, and beyond
WLJS Notebook is optimized for interactive computing and allows to make complex real-time computations like these ones below
The entire scene above is generated on the Wolfram Kernel and streamed to WebGL buffers via low-latency binary sockets.
An optional AI-assistant will see directly, edit or add any cell in the notebook. No confirmation, no chat dialogs:
Write beautiful equations directly within normal Wolfram Language expressions.
🎹 No need to lift your fingers from the keyboard
Alt+2,Cmd+2: Toggle input cell visibilityCtrl+/: Create a fraction from selectionCtrl+6: Create superscript from selectionCtrl+2: Create square root from selectionCtrl+-: Create subscript from selection
Or use toolboxes for complex structures like integrals, summations, and Greek letters.
First class support of Javascript and with a dedicated IPC channel to Wolfram Kernel
- Write once, use forever
- No breaking changes upon updates
- Keep all dependencies within your notebook
- No CDNs, no external libraries, no WRI services
Export entire notebooks as standalone .html files, retaining all embedded data—no internet required for viewing.
Download Wolfram Engine (Version 13.3+ recommended). Activation is required after installation.
- Wolfram Engine 13.3 (no copilot)
- Wolfram Engine 13.4 (no copilot)
- Wolfram Engine 14.0
- Wolfram Engine 14.1
- Wolfram Engine 14.2
- Wolfram Engine 14.3
macOS Installation via Homebrew:
brew install --cask wolfram-engineDownload from the releases section.
WLJS Notebook provides a CLI tool. You can open a folder in WLJS Notebook with:
wljs .WLJS Notebook registers the wljs-message URL protocol, allowing you to open published notebooks directly from web pages.
Use the .exe installer from the releases page.
sudo apt install ./wljs-notebook.debFor Ubuntu 24.04, disable AppArmor restrictions:
sudo sysctl -w kernel.apparmor_restrict_unprivileged_userns=0Clone this repository
git clone https://github.com/JerryI/wolfram-js-frontend
cd wolfram-js-frontend
wolframscript -f Scripts/start.wlsIf you want to try WLJS Notebook without binding the free license to your machine, you can issue license entitlement using Wolfram Cloud or a friend. Then
git clone https://github.com/JerryI/wolfram-js-frontend
cd wolfram-js-frontend
wolframscript -f Scripts/start.wls -entitlement XXX-CODE-OF-ENTITLEMENT-XXXNote: in this regime the evaluation kernel works much slower
contributed by @yloose
docker run -it \
-v ~/wljs:"/home/wljs/WLJS Notebooks" \
-v ~/wljs/Licensing:/home/wljs/.WolframEngine/Licensing \
-e PUID=$(id -u) \
-e PGID=$(id -g) \
-p 8000:3000 \
--name wljs \
ghcr.io/wljsteam/wolfram-js-frontend:mainThen open http://127.0.0.1:8000
We sign official desktop releases publised on Github Releases.
- Windows: Installers (
.exe,.msi) and executable binaries. - macOS:
.appbundles and.dmginstallers. - Source archives & checksums: Each release includes SHA-256 checksums for all artifacts.
- Windows — Signed by SignPath.io using a certificate issued to SignPath Foundation.
Free code signing sponsored by SignPath.io. - macOS — Signed with an Apple Developer ID certificate owned by our team (
com.coffeeliqueur.*).
Gatekeeper should show the developer as our Developer ID when opening the app.
Community or third-party builds are not covered by our signing policy.
This program / code-base will not transfer any information to other networked systems unless specifically requested by the user or the person installing or operating it. See more at Privacy Policy.
WLJS Notebooks (including all extensions, graphics and sound libraries, frontend and backend) are licensed under GPLv3 👩🏼⚖️. The algorithms, functions, and other components of the Wolfram Language provided by the freeware distribution of Wolfram Engine are the intellectual property of Wolfram Research, Inc. See the license agreement if you use it in commerce.