CoCalc feature
Online Jupyter Notebooks
Collaborative notebooks with shared kernels and full edit history.
Run Jupyter notebooks online in a shared CoCalc project: real-time collaboration, chat anchored to cells, TimeTravel history, kernels for Python, SageMath, R, and Julia, course workflows, and AI agent context nearby.
Use collaborative Jupyter notebooks when output, files, terminals, history, and review need to stay together.
Run Jupyter notebooks online
Run Jupyter notebooks online in your browser: type code into a cell, run it, and see the output immediately, with nothing to install on your own machine.
Kernels come from your project's software environment: Python with the scientific stack, SageMath, R, Julia, and more, and kernel state can be shared across collaborators.
- Real-time collaborative editing with visible cursors and shared kernel sessions
- Chat threads anchored to individual cells, plus TimeTravel edit history
- Course workflows for distributing, collecting, and grading notebook assignments
- CPU and memory gauges in the toolbar, with a Stop button for runaway cells