# ReoGrid - .NET Spreadsheet Component

> ReoGrid is a high-performance spreadsheet component for .NET (WinForms, WPF & Avalonia) applications. It provides Excel-compatible display, editing, formula calculation, and printing capabilities for business systems.

This is the English product site for ReoGrid: https://reogrid.net/

## Product Overview

ReoGrid is a .NET embeddable spreadsheet component that brings Excel-like functionality to desktop applications. It is designed for business systems such as accounting, finance, and enterprise applications.

- **Platforms**: .NET WinForms, WPF, Avalonia (V5 and later)
- **Versions**: V5 (ReoGrid One, released 2026-08-19, .NET 10), V4 (current, maintained), V3 (open source)
- **License**: Commercial (V4 / V5, sold as ReoGrid One — one version-independent license covers both), Open Source (V3)
- **Developer**: UNVELL Inc. (Japan)
- **Languages**: English, Japanese

## Key Features

- Excel file import/export (.xlsx)
- Formula calculation (100+ built-in functions)
- Cell types (Button, Checkbox, Dropdown, Progress, Image, etc.)
- Charts (Column, Bar, Line, Area, Pie, Doughnut)
- Data filtering and sorting
- Freeze panes
- Multiple row headers
- Outline / grouping
- Print and page break control
- Cell styles, borders, data formatting
- CSV import/export
- Customizable UI (appearance, editor, hotkeys)
- High-performance rendering

## Site Structure

- Product top page: /
- Features: /features
- What's New in V5: /whats-new-v5
- What's New in V4: /whats-new-v4
- Running V4 and V5 side by side: /v4-and-v5
- Pricing: /pricing
- Product catalogue (PDF request): /catalog
- Download (V3): /download
- Support: /support
- Contact: /contact
- Changelog: /changelog
- Release Notes (V4): /release-notes
- Roadmap: /roadmap
- Terms (ReoGrid One and earlier agreements): /terms

## Documentation

Full technical documentation is available at: /docs/ (V4) and /docs/v5/ (V5).

### V5 Documentation (ReoGrid One)

The V5 line ships as separate NuGet packages (`unvell.ReoGrid.One*`), a separate
assembly and namespace, and targets .NET 10. It is not a drop-in replacement for
V4 — see the migration guide and the differences page.

- V5 documentation index: /docs/v5/
- Getting Started: /docs/v5/getting-started/overview/, /docs/v5/getting-started/installation/, /docs/v5/getting-started/quick-start-winforms/, /docs/v5/getting-started/quick-start-wpf/, /docs/v5/getting-started/quick-start-avalonia/, /docs/v5/getting-started/headless/, /docs/v5/getting-started/licensing/, /docs/v5/getting-started/migrating-from-v4/
- Core Model: /docs/v5/model/workbook/, /docs/v5/model/worksheet/, /docs/v5/model/cell-value/, /docs/v5/model/address/, /docs/v5/model/rows-columns/, /docs/v5/model/merge/, /docs/v5/model/borders/, /docs/v5/model/named-ranges/, /docs/v5/model/performance/
- Styles and Formatting: /docs/v5/style/style-record/, /docs/v5/style/inheritance/, /docs/v5/style/number-format/, /docs/v5/style/rich-text/, /docs/v5/style/conditional-formatting/
- Formulas (122 built-in functions): /docs/v5/formula/overview/, /docs/v5/formula/functions/, /docs/v5/formula/references/, /docs/v5/formula/errors/, /docs/v5/formula/custom-functions/
- Cell Types: /docs/v5/cell-types/overview/, /docs/v5/cell-types/builtin/, /docs/v5/cell-types/custom/
- Data Operations: /docs/v5/data/editing/, /docs/v5/data/auto-fill/, /docs/v5/data/sort/, /docs/v5/data/filter/, /docs/v5/data/outline/, /docs/v5/data/clipboard/, /docs/v5/data/undo-redo/
- View and Interaction: /docs/v5/view/viewport/, /docs/v5/view/freeze-panes/, /docs/v5/view/zoom/, /docs/v5/view/selection/, /docs/v5/view/images/, /docs/v5/view/appearance/
- Input and Output: /docs/v5/io/json/, /docs/v5/io/csv/, /docs/v5/io/xlsx/, /docs/v5/io/pdf/, /docs/v5/io/print/
- Platforms (WinForms, WPF, Avalonia): /docs/v5/platform/winforms/, /docs/v5/platform/wpf/, /docs/v5/platform/avalonia/, /docs/v5/platform/events/, /docs/v5/platform/keyboard-mouse/, /docs/v5/platform/custom-graphics/
- How-to Guides: /docs/v5/how-to/fill-from-datatable/, /docs/v5/how-to/excel-template/, /docs/v5/how-to/large-data/, /docs/v5/how-to/date-picker-cell/, /docs/v5/how-to/vb-net/
- Reference: /docs/v5/reference/api-index/, /docs/v5/reference/json-schema/, /docs/v5/reference/xlsx-compat-matrix/, /docs/v5/reference/v4-differences/, /docs/v5/reference/release-notes/

### V4 Documentation Sections

- Getting Started: /docs/getting-started/
- Workbook: /docs/workbook/
- Worksheet: /docs/worksheet/
- Selection: /docs/selection/
- Data (Filtering, Outline, Validation): /docs/data/
- Cell (Style, Border, Format): /docs/cell/
- Cell Types: /docs/cell-types/
- Formula: /docs/formula/
- Chart: /docs/chart/
- Floating Objects: /docs/floating/
- Events: /docs/events/
- Customization: /docs/customization/
- Actions: /docs/actions/
- I/O (Excel, CSV): /docs/io/
- Advanced (Print, Performance): /docs/advanced/
- How-To Guides: /docs/how-to/
- Troubleshooting: /docs/troubleshooting/

## Related Sites

- Japanese site: https://reogrid.net/jp/
- ReoGrid Web (browser-based): https://web.reogrid.net/
- Company: https://unvell.com/
- GitHub (V3 open source): https://github.com/unvell/ReoGrid

## Machine-readable References

- Full documentation (all V4 doc pages concatenated): https://reogrid.net/llms-full.txt
- Compact API index (classes, properties, methods, events, enums): https://reogrid.net/llms-api.txt