Pennant

What it does

Code contributions

The README invites users to submit issues, feature requests, and pull requests.checked 12 Oct 2026

Code editor

The README says CodeMirror 6 provides the coding environment and integrates with Yjs for collaborative editing.checked 12 Oct 2026

Collaboration

The README says Yjs enables real-time collaboration and synchronization between users.checked 12 Oct 2026

Deployment options

nonechecked 22 Sep 2026

Documentation

The README links to preliminary documentation at docs.trypennant.com.checked 12 Oct 2026

Execution

Users can run individual cells or a full notebook, with a shared execution context whose outputs update in real time for connected users.checked 12 Oct 2026

Full-stack runtime

Nochecked 22 Sep 2026

Interface

The repository contains the React application for the Pennant Notebook project.checked 12 Oct 2026

Languages

The README describes JavaScript and Python support, and lists Go and Ruby as upcoming language support.checked 12 Oct 2026

License

Pennant Notebook is MIT licensed.checked 12 Oct 2026

Markdown

The README lists BlockNote as the Markdown editing component.checked 12 Oct 2026

Offline persistence

The README lists caching and offline capabilities through y-indexeddb.checked 12 Oct 2026

Product

Pennant is an open-source computational notebook for real-time collaboration and flexible code execution in Markdown, JavaScript, and Python.checked 12 Oct 2026

Real-time collaboration

Yeschecked 22 Sep 2026

Setup

The README says the project uses a multi-repository structure and points to its contributing guide for setup across components.checked 12 Oct 2026