Rowsncolumns

A composable, declarative spreadsheet component for React that renders in HTML Canvas for high performance, enabling the display of millions of rows and columns. It solves the problem of building custom spreadsheet interfaces with full control over data and state. It targets developers and engineering teams in B2B contexts, particularly those building data-intensive applications. It is positioned as a customizable, component-based alternative to monolithic spreadsheet libraries, with an open-source model and enterprise support.

Key features

• Renders in HTML Canvas for 60fps performance
• Supports millions of rows and columns
• Composable components for custom UI
• Declarative API with callbacks
• Bring your own data model
• Optional useSpreadsheetState hook
• Undo/redo capability
• Calculation framework with web worker support
• Real-time collaboration built-in