# giraffe-fsharp/Giraffe

A native functional ASP.NET Core web framework for F# developers.

Repository: https://github.com/giraffe-fsharp/Giraffe
Canonical: https://ross.abutalabs.com/products/giraffe
Homepage: https://giraffe.wiki
Language: F#
License: Apache-2.0
License Family: permissive
Topics: aspnet-core, web-framework, http-handler, middleware, fsharp, micro-framework, giraffe, template-engine, dotliquid, dotnet, model-view-presenter, dotnet-core
Last push: 2026-08-25T01:11:02+00:00

## Health v2 (maintenance only)
Score: 86/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 62, longevity 100
- inputs: {"age_days": 3525, "days_push": 9, "days_rel": 43, "gap_med": 321.5, "n_releases_24m": 3}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2250, forks 267 (observed 2026-08-28T04:06:30.963595+00:00)

## What it is
Giraffe is a functional micro web framework for F# that runs on top of ASP.NET Core. Applications are composed of HttpHandler functions that plug into the ASP.NET Core middleware pipeline, offering a functional counterpart to ASP.NET Core MVC.

## Use cases
- build web APIs in F# on ASP.NET Core
- write functional-first HTTP handlers and routing
- serve JSON/XML with content negotiation in F#
- render HTML with a functional view engine or DotLiquid/Razor
- add functional middleware to an existing ASP.NET Core app
- build microservices with F# and .NET

## When to choose
- you are an F# developer who wants functional-first web development on ASP.NET Core
- you want a lightweight alternative to ASP.NET Core MVC while reusing its ecosystem
- you prefer composable HttpHandler functions over controller classes

## When to avoid
- you want a standalone web server independent of ASP.NET Core
- your team works primarily in C# or VB.NET
- you need a batteries-included full-stack MVC framework

## Facets
- artifact type: framework
- maturity: active
- function: web-framework, routing, middleware, serialization, templating
- domain: web-development, backend, apis
- platform: dotnet, cross-platform
- tags: fsharp, aspnet-core, micro-framework, functional-programming, http-handler, view-engine, web-server

## Member repositories
- giraffe-fsharp/Giraffe (main) score 86

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:30.963595+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 2026-08-30T02:43:52.153532+00:00, confidence not recorded.
  - readme: https://github.com/giraffe-fsharp/Giraffe (fetched 2026-08-28T04:06:30.963595+00:00, sha adaf51195612)
  - homepage: https://giraffe.wiki (fetched 2026-08-29T10:23:57.846467+00:00, sha e826309ac561)
  - site_page: https://giraffe.wiki/docs (fetched 2026-08-29T10:23:57.856724+00:00, sha 41620471d783)
- Data as of 2026-08-30T08:39:29.467469+00:00.