F# Functional programming

Open-source F# projects categorized as Functional programming

Top 5 F# Functional programming Projects

  • VisualFSharp

    The F# compiler, F# core library, F# language service, and F# tooling integration for Visual Studio

    Project mention: Experimentation with Optimized Closures | /r/fsharp | 2023-03-31

    There's docs about how the compiler generally does optimizations here: https://github.com/dotnet/fsharp/blob/main/docs/optimizations.md

  • dark

    Darklang main repo, including language, backend, and infra

    Project mention: WASM_of_OCaml | news.ycombinator.com | 2023-07-24

    Yes. Darklang was originally in OCaml using js_of_ocaml, and we ported it to F# using Blazor (https://github.com/darklang/dark/tree/main/backend/src/Wasm). It works.

    We found that in dotnet 6, the code was much slower, with long startup times and a much bigger download, than in js_of_ocaml. It also had a lot of issues in running in a Webworker, which wasn't the case for js_of_ocaml.

    In dotnet 7, the webworker issues are better and AOT is easier, so startup is faster. Download sizes are still bad, and it's still slower than js_of_ocaml.

    However, dotnet allows almost any code to run in WASM, which js_of_ocaml had large limitations. This meant a decent chunk of functionality had to be worked around to make separate js vs native targets, which also was a massive pain and took a long time. Dune's virtual targets wasn't ready at the time - I think we were one of the test cases for it.

  • Onboard AI

    Learn any GitHub repo in 59 seconds. Onboard AI learns any GitHub repo in minutes and lets you chat with it to locate functionality, understand different parts, and generate new code. Use it for free at www.getonboard.dev.

  • WebApiTest

    Sustainable Web API written in F# that showcases the language's strengths via a functional style.

  • Lambda-Calculus

    A simple Programming Language Compiler to Lambda-Calculus, with a Lambda-Runtime (by Demuirgos)

  • Transmute

    A sound change applier in F#

    Project mention: What are you working on? (2023-04) | /r/fsharp | 2023-04-03

    Last month I rewrote the transducer module's guts from the ground up. I'm super excited about this because it's really been more of a meditation on language and computation, but now that I've eliminated the most pernicious bugs, it basically works! Try the browser demo. I'm still figuring out how to use web workers with Fable, so if you want to see how fast it can go when it's running on all your cores, try one of the binaries.

  • InfluxDB

    Collect and Analyze Billions of Data Points in Real Time. Manage all types of time series data in a single, purpose-built database. Run at any scale in any environment in the cloud, on-premises, or at the edge.

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020). The latest post mention was on 2023-07-24.

F# Functional programming related posts


What are some of the best open-source Functional programming projects in F#? This list will help you:

Project Stars
1 VisualFSharp 3,647
2 dark 1,440
3 WebApiTest 47
4 Lambda-Calculus 13
5 Transmute 2
SaaSHub - Software Alternatives and Reviews
SaaSHub helps you find the best software and product alternatives