F#

DiffSharpDiffSharp/DiffSharp

A tensor library for differentiable functional programming in F#, with PyTorch-like APIs and GPU support.

FelizZaid-Ajaj/Feliz

A fresh retake of the React API in Fable for building React applications in F#, optimized for developer happiness.

FParsecstephan-tolksdorf/fparsec

A parser combinator library for F# that enables building recursive-descent parsers for formal grammars.

FsToolkit.ErrorHandlingdemystifyfp/FsToolkit.ErrorHandling

An opinionated F# library providing utility functions, computation expressions, and operators for working with the Result type.

FarmerCompositionalIT/farmer

A .NET library for creating and deploying Azure resources using ARM templates with F# domain-specific language.

HopacHopac/Hopac

A Concurrent ML-style library for F# providing lightweight concurrency primitives and message-passing.

logarylogary/logary

A high-performance, structured logging and metrics library for .NET and F#, following OpenTelemetry specifications.

altcoverSteveGilham/altcover

A cross-platform .NET code coverage tool that instruments assemblies via IL weaving for Mono, .NET Framework, and .NET Core.

Logarylogary/logary

A high-performance, structured logging and metrics library for .NET and F#, following OpenTelemetry specifications.

ProjectScaffoldfsprojects/ProjectScaffold

A prototypical .NET solution scaffolding tool with a build process for F# projects.

canopylefthandedgoat/canopy

An F# web automation and testing library built on Selenium with C# compatibility.

FsHttpronaldschlenker/FsHttp

A hackable HTTP client for F# and .NET that combines convenience with flexibility for both interactive exploration and production use.

CocosSharpmono/CocosSharp

A C# implementation of Cocos2D and Cocos3D APIs for building cross-platform games with MonoGame.

Argufsprojects/Argu

A declarative CLI argument and XML configuration parser with help message generation for F# applications.

Blazor Reduxtorhovland/blazor-redux

A library that provides Redux-style state management for Blazor applications, enabling predictable state containers with C# and F# support.

UrhoSharpxamarin/urho

A lightweight, cross-platform 3D game engine for C# and F# powered by Urho3D.

Elmish.WPFelmish/Elmish.WPF

A production-ready library for building WPF applications using the Elmish/MVU architecture with static XAML views and data bindings.

FsUnitfsprojects/FsUnit

A library that makes unit-testing with F# more enjoyable by adding a functional syntax to .NET testing frameworks.

FunScriptZachBray/FunScript

F# to JavaScript compiler with TypeScript type provider for jQuery and other library bindings.

SpreadsSpreads/Spreads

An ultra-fast .NET library for complex event processing and time series manipulation, handling historical and real-time data streams.

VimSpeakAshleyF/VimSpeak

Control Vim and Vim-like editors with voice commands using speech recognition.

OxpeckerLanayx/Oxpecker

A high-performance F# web framework for building fullstack applications with ASP.NET Core, HTMX, and Solid.js.

FSharp.Data.GraphQLfsprojects/FSharp.Data.GraphQL

An F# implementation of the GraphQL specification, providing a type-safe server and client library for .NET ecosystems.

MyriadMoiraeSoftware/myriad

A code generator for F# that enables meta-programming by generating idiomatic F# code from AST input via plugins.

FSharpLuMicrosoft/fsharplu

A lightweight F# utility library providing helpers for string manipulation, logging, collections, file operations, JSON serialization, and Azure/Windows integration.

Math.NET Symbolicsmathnet/mathnet-symbolics

A lightweight open-source computer algebra library for .NET, Silverlight, and Mono, written in F#.

FSharp.SystemTextJsonTarmil/FSharp.SystemTextJson

A System.Text.Json serializer for F# types including records, discriminated unions, and collections with extensive customization.

Npgsql.FSharpZaid-Ajaj/Npgsql.FSharp

A thin, F#-friendly wrapper around Npgsql for PostgreSQL database operations with optional static query analysis.

FSharpLintfsprojects/FSharpLint

A static analysis tool for F# that enforces coding conventions, detects code smells, and checks formatting rules.

TypeShapeeiriktsarpalis/TypeShape

A practical F# library for datatype-generic programming using reflection and visitor patterns to minimize boilerplate.

Http.fshaf/Http.fs

A simple, functional HTTP client library for F# with an immutable, fluent API.

FSharp.TypeProviders.StarterPackfsprojects/FSharp.TypeProviders.StarterPack

An SDK for creating F# type providers with the ProvidedTypes.fs API files needed for authoring.

F# RISC-V Instruction Set formal specificationmrLSD/riscv-fs

A formal and executable RISC-V ISA specification written in F# with a purely functional style, designed for clarity and reference.

XPlotfslaborg/XPlot

A collection of older F# plotting libraries using Plotly and Google Charts as backends for data visualization.

Warewolf ESBWarewolf-ESB/Warewolf

A visual, flow-based development environment for designing and creating microservices with drag-and-drop functionality.

SwaggerProviderfsprojects/SwaggerProvider

F# generative Type Provider that auto-generates strongly-typed HTTP client code from OpenAPI/Swagger schemas at compile time.