dotnet/fsharp
The F# compiler, F# core library, F# language service, and F# tooling integration for Visual Studio observed · 2026-08-28
Health v2 · maintenance only
74/100
- Activity 99
- Release rhythm 28
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: 35
- age_days: 4253
- days_rel: 568
- days_push: 7
- n_releases_24m: 4
Adoption not part of the score
4323 stars · 870 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
The official open-source F# compiler, F# core library (FSharp.Core), and F# language service, including tooling integration for Visual Studio. It is the reference implementation of the F# functional programming language on .NET, developed under the .NET Foundation.
Use cases
- compile F# code to .NET assemblies
- build the F# compiler from source on Windows, Linux, or macOS
- get IntelliSense and language service support for F# in editors
- contribute to F# language and compiler development
- use FSharp.Compiler.Service to build custom F# tooling
- write succinct functional-first .NET applications
When to choose
- you need the canonical F# compiler and core library for .NET development
- you are building F# editor tooling or IDE integrations on top of FSharp.Compiler.Service
- you want to contribute to or extend the F# language and its tooling
- you need a cross-platform, MIT-licensed functional language implementation on .NET
When to avoid
- you just want to learn F# rather than work on the compiler itself - use the .NET SDK and F# docs instead
- you need an IDE experience out of the box - install Visual Studio, Ionide for VS Code, or Rider rather than building this repo
- you are writing C# or Visual Basic - this project only covers F#
Facets
cli-tool · maturity stable
compiler interpreter developer-tools type-system sdk programming-languages compilers developer-tools cross-platform cross-platform windows dotnet fsharp functional-programming language-service visual-studio intellisense dotnet compiler linux macos
6 sources
- readme: https://github.com/dotnet/fsharp · fetched 2026-08-28 · f1e1cc0db702
- homepage: https://dotnet.microsoft.com/languages/fsharp · fetched 2026-08-29 · 116022f91bb4
- site_page: https://learn.microsoft.com/docs · fetched 2026-08-29 · f29800be2b9a
- site_page: https://learn.microsoft.com/en-us/dotnet · fetched 2026-08-29 · efa9016b58aa
- site_page: https://dotnet.microsoft.com/en-us/languages/fsharp/tools · fetched 2026-08-29 · e7b78a55955d
- site_page: https://dotnet.microsoft.com/en-us/learn/dotnet/what-is-dotnet · fetched 2026-08-29 · f9cbdbccc645
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| dotnet/fsharp | main | 74 |
For agents
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem