# unvell/ReoGrid

Fast and powerful .NET spreadsheet component, support data format, freeze, outline, formula calculation, chart, script execution and etc. Compatible with Excel 2007 (.xlsx) format and working on .NET 3.5 (or client profile), WPF and Android platform.

Repository: https://github.com/unvell/ReoGrid
Canonical: https://ross.abutalabs.com/products/reogrid
Homepage: https://reogrid.net
Language: C#
License: MIT
License Family: permissive
Topics: dotnet, spreadsheet, wpf, formula, calculation, grid, grid-editor, excel, excelreader, excelwriter, xlsx, xlsxwriter, xlsxreader, reogrid
Last push: 2026-06-02T16:32:35+00:00

## Health v2 (maintenance only)
Score: 64/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 85, release rhythm 16, longevity 100
- inputs: {"age_days": 3608, "days_push": 92, "days_rel": 454, "gap_med": 138, "n_releases_24m": 2}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1598, forks 438 (observed 2026-08-28T04:05:09.414163+00:00)

## What it is
ReoGrid is an open-source .NET spreadsheet component (MIT Community Edition, V3) that embeds an Excel-like grid into WinForms and WPF applications, with formula calculation, charts, cell styles, freeze panes, outlines, and XLSX import/export. This repository is the free V3 edition; the vendor's newer V4/V5 editions and web versions are commercial products.

## Use cases
- embed an excel-like spreadsheet grid in a winforms app
- read and write xlsx files from a .net application
- add formula calculation to a wpf data grid
- display editable tabular data with cell formatting and charts
- build a spreadsheet editor with freeze panes and outlines
- import excel workbooks preserving formulas and merged cells

## When to choose
- you need a free MIT-licensed spreadsheet control inside a .NET WinForms or WPF app
- you need Excel .xlsx import/export with formulas, styles, and merged cells preserved
- you want built-in formula evaluation, charts, and cell types without COM/Excel interop

## When to avoid
- you need the newest features like lazy loading of 1M+ rows, Avalonia support, or commercial support (those are in paid V4/V5)
- you are building a web app with React or Vue (the web edition is a separate commercial product)
- you need a headless server-side spreadsheet engine rather than an interactive UI control

## Facets
- artifact type: library
- maturity: maintenance
- function: ui-components, data-visualization, file-system, templating
- domain: spreadsheets, desktop-applications, cross-platform, files, developer-tools
- platform: dotnet, windows, cross-platform
- tags: spreadsheet-component, excel-compatible, xlsx, winforms, wpf, formula-engine, grid-control, charts, cell-styling, data-grid

## Member repositories
- unvell/ReoGrid (main) score 64

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:09.414163+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:53:17.720568+00:00, confidence not recorded.
  - readme: https://github.com/unvell/ReoGrid (fetched 2026-08-28T04:05:09.414163+00:00, sha 39154e7fc859)
  - homepage: https://reogrid.net (fetched 2026-08-29T11:24:58.140357+00:00, sha 7fed9d52dc82)
  - site_page: https://reogrid.net/features (fetched 2026-08-29T11:24:58.143273+00:00, sha eab47b83f6df)
  - site_page: https://reogrid.net/docs (fetched 2026-08-29T11:24:58.147529+00:00, sha 4b9a4fafbd1e)
  - site_page: https://reogrid.net/docs/v5 (fetched 2026-08-29T11:24:58.149259+00:00, sha 96be60fc1f22)
  - site_page: https://reogrid.net/docs/getting-started (fetched 2026-08-29T11:24:58.159317+00:00, sha f69c13955945)
  - site_page: https://reogrid.net/pricing (fetched 2026-08-29T11:24:58.153461+00:00, sha 67e601168cea)
  - site_page: https://reogrid.net/release-notes (fetched 2026-08-29T11:24:58.156391+00:00, sha 100430910ede)
  - site_page: https://reogrid.net/whats-new-v4 (fetched 2026-08-29T11:24:58.145472+00:00, sha 538a13a0209a)
  - site_page: https://web.reogrid.net (fetched 2026-08-29T11:24:58.162089+00:00, sha e5052e6d7251)
- Data as of 2026-08-30T08:39:29.467469+00:00.