# microsoft/fluentui

Fluent UI web represents a collection of utilities, React components, and web components for building web applications.

Repository: https://github.com/microsoft/fluentui
Canonical: https://ross.abutalabs.com/products/fluentui
Homepage: https://react.fluentui.dev
Language: TypeScript
License: NOASSERTION
License Family: other
Topics: react, react-components, office-ui-fabric, microsoft, components, fluent
Last push: 2026-08-26T22:01:00+00:00

## Health v2 (maintenance only)
Score: 90/100 (v2, computed 2026-09-03T02:39:23.370411+00:00)
- activity 99, release rhythm 74, longevity 100
- inputs: {"age_days": 3740, "days_push": 7, "days_rel": 99, "gap_med": 0.0, "n_releases_24m": 4213}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 20230, forks 2919 (observed 2026-08-28T04:11:29.816068+00:00)

## What it is
Fluent UI web is Microsoft's collection of React components, utilities, and Web Components implementing the Fluent design system for building web applications. It ships three projects: Fluent UI React v9 (stable), React v8 (mature), and Web Components, used across Microsoft 365, Office, and Edge.

## Use cases
- build web apps with Microsoft Fluent design components
- find React UI component library for enterprise apps
- migrate gradually from Fluent UI React v8 to v9
- use framework-agnostic web components styled like Fluent
- theme and style a React application consistently
- build an Office or Microsoft 365-style web interface

## When to choose
- you want Microsoft's Fluent design system in React or as Web Components
- you're building enterprise web apps that should match Microsoft 365 look and feel
- you need a mature, actively maintained component library with gradual migration paths

## When to avoid
- you want a minimal headless styling solution rather than full components
- you're not using React or Web Components in your stack
- you need a design system other than Fluent (e.g., Material Design)

## Facets
- artifact type: library
- maturity: stable
- function: ui-components, frontend-framework, css-framework, theme
- domain: web-development, frontend, web-design
- platform: browser
- tags: react, web-components, design-system, microsoft-fluent, component-library, typescript, web-server, nodejs

## Member repositories
- microsoft/fluentui (main) score 90

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:29.816068+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 2026-08-29T16:59:19.233829+00:00, confidence not recorded.
  - readme: https://github.com/microsoft/fluentui (fetched 2026-08-28T04:11:29.816068+00:00, sha 1d4ff9d43ba5)
  - homepage: https://react.fluentui.dev (fetched 2026-08-29T07:58:02.626234+00:00, sha 2c569e40d867)
- Data as of 2026-08-30T08:39:29.467469+00:00.