# fsprojects/Avalonia.FuncUI

Develop cross-plattform GUI Applications using F# and Avalonia!

Repository: https://github.com/fsprojects/Avalonia.FuncUI
Canonical: https://ross.abutalabs.com/products/avaloniafuncui
Homepage: https://funcui.avaloniaui.net/
Language: F#
License: MIT
License Family: permissive
Topics: avalonia, avaloniaui, elmish, fsharp, dotnet, mvu, ui, gui
Last push: 2026-08-23T16:06:55+00:00

## Health v2 (maintenance only)
Score: 88/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 67, longevity 100
- inputs: {"age_days": 2673, "days_push": 10, "days_rel": 10, "gap_med": 315, "n_releases_24m": 4}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1257, forks 81 (observed 2026-08-28T04:04:09.462874+00:00)

## What it is
Avalonia.FuncUI is an F# library providing a functional Elm-style (MVU) layer on top of the Avalonia UI framework, including a virtual DOM, view DSL, and component/state management system. It enables building cross-platform desktop GUI applications entirely in F#.

## Use cases
- build cross-platform desktop apps in F#
- write Avalonia UI with an Elmish MVU architecture
- create GUI applications with a virtual DOM in .NET
- develop functional reactive user interfaces in F#
- build a counter or stateful component UI without XAML

## When to choose
- you are an F# developer wanting declarative, functional UI code
- you prefer MVU/Elm architecture over XAML and MVVM
- you need one codebase targeting Windows, macOS, and Linux desktops

## When to avoid
- your team works primarily in C# or VB.NET
- you need mobile (iOS/Android) targets rather than desktop
- you depend on XAML tooling and designers

## Facets
- artifact type: library
- maturity: active
- function: ui-components, state-management, frontend-framework, desktop-framework
- domain: cross-platform, desktop-applications, web-development, developer-tools
- platform: cross-platform, dotnet, windows
- tags: fsharp, avalonia, elmish, mvu, virtual-dom, gui, desktop, macos, linux

## Member repositories
- fsprojects/Avalonia.FuncUI (main) score 88

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:09.462874+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 2026-08-30T05:07:11.385172+00:00, confidence not recorded.
  - readme: https://github.com/fsprojects/Avalonia.FuncUI (fetched 2026-08-28T04:04:09.462874+00:00, sha 7b410b2560e1)
  - homepage: https://funcui.avaloniaui.net/ (fetched 2026-08-29T12:17:21.387971+00:00, sha 88585ca77d26)
- Data as of 2026-08-30T08:39:29.467469+00:00.