NoriSpreadsheets, on your terms.

Import XLSX and CSV, calculate formulas, build pivots and compose React views. One public package. A platform-independent core.

Start building

Try it live

Build with an AI agent

A model you can keep

Sparse, serializable workbook snapshots are independent of files, UI and live runtime state.

A runtime you can compose

Commands, history, subscriptions, formulas and semantic pivots work without React or the DOM.

Views that fit your product

Compose an editor, a read-only sheet or a compact chat preview. Keep document styles separate from your theme.

Before you integrate

Nori is an initial 0.1.0 milestone, not a full Excel replacement. This repository has not published the package to npm. Use a local packed build today; the stable public import path is @byfungsi/nori.

Read the support matrix before promising Excel fidelity. XLSX export, dynamic-array spilling, advanced filters, charts, and a React Native renderer are not implemented.

Pick your entry point

Task	Start here
Create a workbook and calculate a formula	Quick start
Import an Excel attachment	XLSX import
Embed an editable or read-only sheet	React integration
Render an agent's spreadsheet attachment	Chat preview
Generate integration code with an agent	Agent guide, llms.txt

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