A blazing-fast, multi-flavor regular expression engine for .NET. The fastest way to match. Unlike Greg.

File path abstraction library for .NET.

Repository hosting the functional Nu Game Engine and related projects.

Web Components for F#. Powered by Lit

Fine-grained reactive computation for .NET

Removes unreachable IL from a library at build time. The public surface is untouched; non-public types and members that nothing reaches are trimmed. The trimming is done by the .NET IL linker, the …

Does a test fail when the rule it guards is switched off? Mutation testing by intent, for F#.

A Zig library to idiomatically communicate with other BEAM nodes

Create DOS programs with Zig

An Elgato Stream Deck foobar2000 integration.

The Pencil Project's unique mission is to build a free and opensource tool for making diagrams and GUI prototyping that everyone can use.

Interactive Gleam Shell (GSH) — a lightweight REPL for Gleam with expression evaluation, persistent runtime bindings, multiline support, and an interactive shell experience built on the BEAM VM.

dotnet CLI tool to generate type-safe F# and Fable clients from OpenAPI/Swagger or OData services

SharpLsp brings the complete .NET development experience to every editor in C# and F#

Reduce LLM word slop. Use ASD-STE100 Simplified Technical English.

A parser combinator library for Zig

F# fspure - spot and isolate impurity Please note: this is heavily WIP. Documentation and developer journey are still being improved. Don't expect a stable experience before 1.0. Issues will be ope…

A terminal for a more modern age

Altern's source code

Gooey is a hybrid immediate/retained mode UI framework designed for building fast, GPU-rendered applications on macOS/Metal, WebAssembly/WebGPU, and Wayland/Vulkan

F# support for Zed

An engine for building F# source generators.

Port of Adobe's XMP SDK for Kotlin Multiplatform

RE# - A high-performance, automata based regex engine with first-class support for intersection and complement operations.

A micro-framework built on top of Monogame for F# Devs

GUI for the Windows Subsystem for Linux — and native Linux/macOS VMs on Mac. Install, back up, move and configure distros without CLI flags; AI assistant with tools, MCP server for agents, remote W…

A native F# DSL for WPF using the Elm architecture (MVU pattern). No XAML, no MVVM, no INotifyPropertyChanged — pure functions all the way down.

Frame profiler