Spreadsheet Engine
Headless, Excel-compatible calculation engine for the browser, on-device, or server.
@grid-is/spreadsheet-engine Read docs Packages
Evaluation packages
Section titled “Evaluation packages” Spreadsheet Viewer
Display spreadsheets inside your React app, read-only, with no backend.
@grid-is/spreadsheet-viewer Read docs Spreadsheet Editor
A scoped, familiar spreadsheet editing experience for React.
@grid-is/spreadsheet-editor Read docs Agent Tools
Let an AI agent read, calculate, and edit spreadsheets, headless and in-process. Run it as an MCP server or drop the tools into your own agent SDK.
@grid-is/agent-tools Read docs Commercial packages
Section titled “Commercial packages” Apiary
Production engine behind Spreadsheet Engine.
@grid-is/apiary Read docs Mondrian React
Production viewer behind Spreadsheet Viewer.
@grid-is/mondrian-react Read docs Editor
Production editor behind Spreadsheet Editor.
@grid-is/editor Read docs Mondrian
Low-level, framework-agnostic canvas renderer beneath the viewer.
@grid-is/mondrian Read docs Supporting packages
Section titled “Supporting packages” Cellatrix
Read-only access to cell data and structure.
@grid-is/cellatrix Read docs jsf2xlsx
Convert JSON spreadsheets (JSF) to Excel XLSX files.
@grid-is/jsf2xlsx Read docs xlsx-convert
Open-source XLSX-to-JSON converter.
@borgar/xlsx-convert Visit repo