Sergey Tihon's Blog

Welcome to F# Weekly,

A roundup of F# content from this past week:

Microsoft News

• Copilot Studio gets faster with .NET 10 on WebAssembly
• Durable Workflows in the Microsoft Agent Framework
• Microsoft Agent Framework – Building Blocks for AI Part 3
• What’s New in Aspire 13.3 | Aspire Blog
• A Tour of Handoff Orchestration Pattern | Microsoft Agent Framework
• Visual Studio Code 1.119

Videos

• Yapping about GUIs, F# and Lisp — Matt R
• .NET MAUI Community Standup: Rust, SkiaSharp Everywhere, AI/ML Live Processing — .NET
• ASP.NET Community Standup: Simplifying Entra ID authentication with AI — .NET
• On .NET Live: Shaving the outbox pattern yak — .NET

Blogs

• ragingHungryPanda: Navigating and Learning Data Access in FSharp
• Understanding Compilers Through an Algebraic Expression Compiler | Jonas Lara
• AI + F#: Faster Development Without Losing Reliability – Ada Beat

There you go: #fsharp adabeat.com/fp/ai-f-fast…

— (@halcwb.bsky.social) 2026-05-04T19:07:14.386Z

Highlighted projects

• Neftedollar/FsMcp — Idiomatic F# toolkit for building Model Context Protocol (MCP) servers and clients with type safety and computation expressions
• WillEhrendreich/SageFs — Sage Mode for F# development — REPL with solution loading, Live Testing, Hot Reload, and MCP server support
• fs-fio/fio — A type-safe, purely functional effect system for asynchronous and concurrent F#
• Neftedollar/ll-lang — Write once, compile to F#, TypeScript, Python, Java, and C# — LLM-optimized syntax with self-hosting
• jonas1ara/Algebraic-Tiny-Compiler — Understanding compilers through algebra

New Releases

• FSharp.Data 8.1.13
• NBomber 6.4.0
• Pulsar.Client 3.15.2
• Akka.FSharp 1.5.67
• Akka.Persistence.FSharp 1.5.67
• SageFs 0.6.270
• Equinox.MessageDb 4.1.3
• Propulsion.MessageDb 3.0.1
• EluciusFTW.SpectreCoff 0.54.7
• FSharp.TypeProviders.Templates 8.10.0
• FsMcp.Core 1.1.1
• Fable.TypedJson 0.3.0
• FunStripe.Core 2.0.6
• YamlFrontMatter 0.10.8
• CommandTree 0.5.0
• UnionConfig 0.2.0
• FSharp.Windows.Dsl 0.3.0
• Expecto 11.0.0-alpha9

This is what is happening right now. Claude uses the fsi-mcp to slowly and step by step implement a plan in #fsharp. AI + #sharp + #fsi-mcp

— (@halcwb.bsky.social) 2026-05-07T09:06:48.150Z

That’s all for now. Have a great week.

If you want to help keep F# Weekly going, click here to jazz me with Coffee!

Welcome to F# Weekly,

A roundup of F# content from this past week:

Microsoft News

• Welcome to SkiaSharp 4.0 Preview 1
• Building an AI-Powered Conference App with .NET’s Composable AI Stack
• Governing MCP tool calls in .NET with the Agent Governance Toolkit
• Combining API versioning with OpenAPI in .NET 10 applications
• High-Performance Distributed Caching with .NET and Postgres on Azure
• VSTest is Removing its Newtonsoft.Json Dependency
• PowerToys 0.99 is here: new monitor controls, easier window management, and Dock upgrades
• Visual Studio April Update – Cloud Agent Integration – Visual Studio Blog
• Visual Studio Code 1.118

Videos

• Functional programming in F# — Fad or Fabulous | Ken Bonny
• .NET MAUI Engineering Team Live Stream: AI-Powered .NET MAUI Development with MauiDevFlow
• Blazor Community Standup: Blazor virtualization gets flexible
• On .NET Live — Make your first NuGet library with .NET 10 and AI

Blogs

• Nick Kossolapov: I built a Game Boy emulator in F#
• Urs Enzler: Event Sourcing — Read Models to the Rescue
• Roman Deneau: What if your pattern matching could call functions?

My friend Nick wrote a Game Boy Emulator with #fsharp and here is his journey nickkossolapov.github.io/fame-boy/bui…

— Fer (@lferc.bsky.social) 2026-05-01T08:18:27.829Z

Highlighted projects

• nickkossolapov/fame-boy — A Game Boy emulator written entirely in F#
• fable-compiler/Fable.Beam — F# to Erlang/BEAM transpiler, opening the door to F# on the Erlang ecosystem
• vykrum/Hywe — Active design sandbox for weaving spatial topology and flow-based hierarchies via design computation, built with F# and WebAssembly
• Savelenko/FSharp.Control.Fold — Represent folding of data structures and streams as composable values via F# applicative computation expressions

New Releases

• FSharp.Data 8.1.11
• Fable.Core 5.0.0
• WebSharper 10.1.1.670
• dotnet-repl 0.3.259
• Equinox.EventStore 4.1.3
• Oxpecker 2.0.1
• Oxpecker.ViewEngine 2.0.1
• Oxpecker.OpenApi 2.1.2
• Thoth.Json.Core 0.9.0
• Fable.Python 5.1.0
• XstarS.GuidModule 2.14.0
• FSharp.Control.Fold 2.0.0
• Conjecture.FSharp 0.27.1
• Giraffe.ViewEngine.Style 0.2.0
• Farse 0.11.0
• Parquet.Net 6.0.0-pre.8
• NBomber 6.4.0-beta.3
• DSharpPlus 5.0.0-nightly-02585
• Expecto 11.0.0-alpha9
• Terminal.Gui 2.0.2-develop.16
• SwaggerProvider 4.0.0-beta03
• Orleans.FSharp 2.0.0-alpha.1
• Agent.NET v1.0.0-rc.8

Agent.NET rc.8 is released!It adds a couple nice-to-have features that clean up the code nicely, and updates to the latest stable MAF versions.github.com/JordanMarr/A… #fsharp

— Jordan Marr (@jordanmarr.bsky.social) 2026-04-27T21:48:26.050Z

That’s all for now. Have a great week.

If you want to help keep F# Weekly going, click here to jazz me with Coffee!

Welcome to F# Weekly,

A roundup of F# content from this past week:

News

• Fable 5 has been released

Fable 5 has been released 🎉This is the result of almost 1 year and a half of work from the community and the maintainers.Huge thank you to everyone involved. ❤️#fsharp #fablecompiler

— Maxime (@mangelmaxime.bsky.social) 2026-04-21T15:53:57.143Z

Microsoft News

• .NET 10.0.7 Out-of-Band Security Update
• What’s new for .NET in Ubuntu 26.04
• Writing Node.js addons with .NET Native AOT
• Pin Clustering in .NET MAUI Maps
• Visual Studio Code 1.117
• Announcing TypeScript 7.0 Beta – TypeScript
• Aspire 13.2: Bun Support and Container Enhancements | Aspire Blog

Videos

• The GenPRES project by Casper Bollen
• Third Online Func Prog Sweden 2026
• .NET Data Community Standup: Lightweight Framework to Automate EF Components
• ASP.NET Community Standup: Combining API Versioning with OpenAPI

Blogs

• Urs Enzler: Event Sourcing — Simple is Often Enough
• Samir Parikh: Options in F#

Highlighted projects

• tommililja/Farse — Simple, explicit JSON parsing for F# using System.Text.Json
• fs-fio/fio — A type-safe, purely functional effect system for asynchronous and concurrent F#
• njlr/thoth-json-ce — Computation Expression for building Thoth.Json decoders
• Neftedollar/FsMcp — Idiomatic F# toolkit for building MCP servers and clients with computation expressions and zero boilerplate
• QuickData.FSharp — Public repository for the QuickData.FSharp packages.

New Releases

• Fable 5.0.0
• Oxpecker.Solid 1.0.0
• Oxpecker.Solid.FablePlugin 1.0.0
• FSharp.TypeProviders.Templates 8.9.0
• QuickData.Numbers.FSharp 0.2.1
• Thoth.Json 10.5.0
• Fable.Remoting.Json 3.0.0
• Fable.Elmish.HMR 9.0.0
• Feliz.Bulma 5.0.0
• Feliz.ReactToaster 2.0.0
• Akka.FSharp 1.5.66
• Akka.Persistence.FSharp 1.5.66
• Akkling.Streams 0.18.1
• FSharp.Data.GraphQL.Server 3.1.1
• DatatypeChannels.ASB 3.1.31
• EasyBuild.ShipIt 2.3.0

Oxpecker.Solid 1.0 has been released with Fable 5 support #fsharp #oxpecker

— Vladimir Shchur (@lanayx.bsky.social) 2026-04-24T03:04:34.954Z

That’s all for now. Have a great week.

If you want to help keep F# Weekly going, click here to jazz me with Coffee!

Welcome to F# Weekly,

A roundup of F# content from this past week:

News

• .NET 11 Preview 3 is now available!
• TypeFighter
• Replace Queue with mutable doubly-linked EventList by nojaf · Pull Request #3331 · fsprojects/fantomas

Microsoft News

• .NET and .NET Framework April 2026 servicing releases updates
• Free Your Terminal with Detached Mode in Aspire 13.2 | Aspire Blog
• New Aspire database integrations | Aspire Blog
• Agent Skills in .NET: Three Ways to Author, One Provider to Run Them | Microsoft Agent Framework
• Azure MCP tools now ship built into Visual Studio 2022 — no extension required – Visual Studio Blog
• Stop Hunting Bugs: Meet the New Visual Studio Debugger Agent Workflow – Visual Studio Blog
• From AI to .NET: 20 VS Live! Las Vegas Sessions You Can Watch Now – Visual Studio Blog
• Visual Studio Code 1.116

Just released SwaggerProvider 4.0.0-beta01 that wrap nullable strings in Option<string>. Try it out and share your feedback! fsprojects.github.io/SwaggerProvi… #fsharp

— Sergey Tihon 🦔🦀 (@sergeytihon.com) 2026-04-16T17:04:11.473Z

Videos

• Functional programming in F# Fad or Fabulous | Ken Bonny
• Blazor Community Standup: Blazor validation in .NET 11

Blogs

• Interview with Jack Fox about porting variant of F#/OCaml/F* to Nock (Urbit’s minimalist instruction set architecture)
• Urs Enzler: Event Sourcing — Simple Is Often Enough
• What if your compiler could enforce your architecture rules? | LinkedIn
• Samir Parikh: Options in F#

Highlighted projects

• pblasucci/ananoid — Ananoid provides nano identifiers, an alternative to UUIDs.
• Neftedollar/fyper — Type-safe Cypher query builder for F# with computation expressions for Neo4j and Apache AGE, zero dependencies
• TheFellow/fkyeah — F# pipeline engine for multi-stage AI workflows and LLM orchestration
• Neftedollar/orleans-fsharp — Idiomatic F# API for Microsoft Orleans using computation expressions, with full Orleans 10.0.1 parity and 800+ tests
• venikman/ACP-inspector — Debug and validate Agent Client Protocol (ACP) traffic for AI coding agents

New Releases

• tree-sitter-fsharp 0.3.0
• FSharp.Data 8.1.8
• FSharp.TypeProviders.Templates 8.6.0
• FSharp.Control.AsyncSeq 4.14.0
• FSharp.Compiler.Service 43.12.202
• Pulsar.Client 3.15.1
• Fable.Remoting.Client 8.0.0
• Fable.Remoting.Server 6.1.0
• Feliz 3.3.0
• FSharp.Control.TaskSeq 1.1.1
• Farmer 1.9.27
• Akkling 0.18.1
• Fantomas.Client 0.11.0
• Fss-lib.Core 3.0.0
• SageFs 0.6.242
• Fidelity.CloudEdge.Management 0.2.0
• StarFederation.Datastar.FSharp 1.3.0

We will remove the Fantomas Discord in favour of a channel on the #fsharp one: discord.com/channels/196…See you there!

— Florian Verdonck (@nojaf.com) 2026-04-14T12:53:31.821Z

That’s all for now. Have a great week.

If you want to help keep F# Weekly going, click here to jazz me with Coffee!

Welcome to F# Weekly,

A roundup of F# content from this past week:

Microsoft News

• Your Migration’s Source of Truth: The Modernization Assessment – .NET Blog
• ASP.NET Core 2.3 end of support announcement – .NET Blog
• Running Multiple Instances of an Aspire AppHost Without Port Conflicts | Aspire Blog
• MCP Apps now available in Copilot chat – Microsoft 365 Developer Blog
• Visual Studio Code 1.115

I love that FSharp.Data is being worked on again #fsharp github.com/fsprojects/F…

— Jon Sagara (@jonsagara.com) 2026-04-07T15:00:35.292Z

Videos

• “Functional Programming Through Construction” By Cameron Presley
• Andrey Chebukin – Azure Cosmos DB – A Deep Dive with Examples in F#
• VS Code Live – Modernizing Legacy .NET applications with GitHub Copilot Modernization in VS Code
• .NET AI Community Standup: Upgrading GenAINET to MAF v1 with SQUAD
• Blazor Community Standup | Blazor integration with Aspire
• On .NET Live – AI offers benefits, but at what cost?

Blogs

• Attempting to auto-tune RANSAC · Mathias Brandewinder blog
• Samir Parikh: Introduction to discriminated unions and pattern matching in F#
• Hidden updates in Ink by Michael Newton
• Fediverss by Michael Newton

bonfire.mavnn.eu/pub/objects…So this is very much a work in progress (see me having to quote the post to add the hashtags…), but meet `fediverss` – a simple F# program that puts your static blog rss in the fediverse. #activitypub #fsharp #blog

— Michael Newton (@mavnn.bonfire.mavnn.eu.ap.brid.gy) 2026-04-10T12:19:17.506Z

Highlighted projects

• Neftedollar/FsMcp — Idiomatic F# toolkit for building Model Context Protocol (MCP) servers and clients with type safety and computation expressions
• MagnusOpera/FScript — Functional language interpreter inspired by F#/ML, with type inference and LSP support
• michaelglass/Falco.UnionRoutes — Type-safe routing with discriminated unions for the Falco web framework
• Neftedollar/ll-lang — Statically typed functional language designed for LLM code generation with token-efficient syntax
• jmeyerhoefer/Testify — F# testing library with a deeply embedded DSL for quotation-based assertions and property-style checks

New Releases

• FSharp.Data 8.1.7
• Pulsar.Client 3.15.0
• SQLProvider 1.5.19
• Akka.FSharp 1.5.65
• Akkling 0.18.0
• Akkling.Persistence 0.18.0
• Akkling.Streams 0.18.0
• Akka.Persistence.FSharp 1.5.65
• SwaggerProvider 3.2.0
• fsdocs-tool 22.0.0
• FarNet.FSharpFar 5.4.0
• FSharp.Idioms 1.5.9
• Fli 1.1000.0
• FsShelter 5.1.0
• telplin 0.11.0
• FSharp.TypeProviders.Templates 8.5.0
• FarNet.FSharp.PowerShell 3.2.0
• Bristlecone 3.1.0
• Frank 7.3.1
• FSharp.Azure.Quantum 1.3.12

Grab the #pxlclock VS Code extension ("PXL Clock), code your own pixogram in #csharp, and ping me here: I'll record it on the real hardware and post the video.Who makes the coolest one?VS Code: marketplace.visualstudio.com/items?itemName=pxlclock.pxl-clock#pxlclock #csharp #fsharp

— SchlenkR (@schlenkr.bsky.social) 2026-04-05T17:33:08.495Z

That’s all for now. Have a great week.

If you want to help keep F# Weekly going, click here to jazz me with Coffee!

Welcome to F# Weekly,

A roundup of F# content from this past week:

News

• Serde.FS alpha.9 — Compile-time RPC for F# with no reflection, no controllers
• Florian Verdonck: Fantomas — exploring new approach to trivia handling

🚀 Serde.FS alpha.9 — Deterministic RPC for F#No reflection. No controllers.Just compile‑time RPC clients + routing.Includes:• [<RpcApi>]• ASP.NET RPC server• Deterministic JSON backend• Shared → Server → Client examplegithub.com/serde-fs/Ser… #fsharp #rpc #aot #serde #dotnet

— Jordan Marr (@jordanmarr.bsky.social) 2026-03-23T00:23:57.049Z

Microsoft News

• Explore union types in C# 15 – .NET Blog
• Aspire 13.2: Dashboard Gets Smarter Export and Telemetry | Aspire Blog
• Aspire Docs in Your Terminal (and Your AI’s Brain) | Aspire Blog
• Microsoft Agent Framework Version 1.0 | Microsoft Agent Framework
• Visual Studio March Update – Build Your Own Custom Agents – Visual Studio Blog
• Bookmark Studio: evolving bookmarks in Visual Studio – Visual Studio Blog
• Visual Studio Code 1.114

Videos

• .NET MAUI Community Standup | Introducing maui-labs – YouTube
• On .NET Live – Imposter: A Mocking Library – YouTube

Blogs

• Functional Languages and the Future of Programming (Part 1) – Linux Professional Institute (LPI)
• Samir Parikh: A Better Way to Represent a Deck of Cards in F#

Highlighted projects

• ingted/FSharp.MCP.DevKit — Experimental prototype of an F# development toolkit delivered via the Model Context Protocol (MCP).
• WillEhrendreich/SageFs — Sage Mode for F# development: REPL with solution loading, Live Testing, Hot Reload, and MCP server support
• laurentlb/shader-minifier — Minify and obfuscate GLSL or HLSL shader code; written in F#, used widely in the demoscene
• DataficationSDK/Verso — Extensible interactive notebook platform for .NET with F# support, runs in VS Code and the browser
• Neftedollar/orleans-fsharp — Idiomatic F# computation expressions for Microsoft Orleans — full Orleans 10.0.1 parity

New Releases

• Serde.FS v1.0.0-alpha.9
• FSharp.Data 8.1.5
• FSharp.Control.AsyncSeq 4.12.0
• Pulsar.Client 2.22.0
• FSharp.Formatting 22.0.0
• SQLProvider 1.5.18
• Akka.FSharp 1.5.64
• Dapper.FSharp 4.10.0
• SqlHydra.Query 3.6.0
• FsCodec.SystemTextJson 3.1.2
• Avalonia.FuncUI v1.5.2
• FSharp.Stats 0.6.0
• FsShelter 5.0.0
• Fss-lib.Core 3.0.0
• FSharp.TypeProviders.Templates 8.4.0
• FsMcp 1.0.1
• Orleans.FSharp 1.0.0
• shader-minifier 1.6.0
• Verso v1.0.12
• fantomas 8.0.0-alpha-009
• WebSharper 10.1.0.667

#neovim version 0.12.0 is out! Almost exactly a year of hard work since 0.11.0.Huge thanks to everyone who worked on it, as well as to all Neovim users!Release: github.com/neovim/neovi…News: github.com/neovim/neovi…Changelog: github.com/neovim/neovi…Here are top 10 most liked features:

— Neovim (@neovim.io) 2026-03-29T17:28:32.649Z

That’s all for now. Have a great week.

If you want to help keep F# Weekly going, click here to jazz me with Coffee!

Welcome to F# Weekly,

A roundup of F# content from this past week:

News

• Addendum: Pattern Variations | Safe Clean Architecture

🎉 Deedle 4.0.1 is out! The F# data frame library just got a massive update – new packages, new operations, better stats, performance wins, and many long-standing bugs squashed. A huge amount of community-originated requests in one release. Full notes 👇github.com/fslaborg/Dee…#fsharp #dotnet

— F# Online (@fsharponline.bsky.social) 2026-03-22T22:33:53.697Z

Microsoft News

• Ten Months with Copilot Coding Agent in dotnet/runtime – .NET Blog
• Generative AI for Beginners .NET: Version 2 on .NET 10 – .NET Blog
• Announcing Aspire 13.2 | Aspire Blog
• Awesome GitHub Copilot just got a website, and a learning hub, and plugins! – Microsoft for Developers
• TypeScript AppHost in Aspire 13.2: same app model, different syntax | Aspire Blog
• Your Entire Engineering Floor Just Stopped Coding | All things Azure
• Agentic Platform Engineering with GitHub Copilot | All things Azure
• Important updates: GitHub Copilot support ending for JetBrains 2024.2 and 2024.3 – Microsoft for Java Developers
• Announcing TypeScript 6.0 – TypeScript
• Visual Studio Code 1.113

Videos

• Make your first game now with .NET and MonoGame
• NET AI Community Standup – MCP C# SDK v1.0 is Here!

Blogs

• Samir Parikh: Discriminated Unions and Pattern Matching in F#
• 9 Ways to Manage Dependencies in One Architecture – Romain DENEAU

In FSAC repo, I'm getting great PRs closing 7 years old issue… from AI.AI slope? It's polished PR, adding code fix and set of tests for it. I wish I was getting such "slope" from #fsharp community for all those years… github.com/ionide/FsAut…

— Krzysztof Cieslak (@kcieslak.io) 2026-03-24T16:52:51.661Z

Highlighted projects

• fsprojects/FSharp.Data.Npgsql: F# type providers to support statically typed access to input parameters and result set of sql statement in idiomatic F# way. Data modifications via statically typed tables. · GitHub
• Thorium / fuuga – LLM model generator for .NET

New Releases

• Deedle 4.0.1
• Fuuga 1.0.1
• Fli v1.1000.0
• Fastoch 0.12.0
• SageFs 0.6.240
• Frank 7.3.1
• Farse 0.9.0
• FsCodec 3.1.1
• NextFs 1.0.0
• SqlHydra.Query 3.5.2
• Fable.Elmish.React 5.5.0
• FSharp.Data 8.1.3
• Akka.FSharp 1.5.63
• FSharp.Control.AsyncSeq 4.11.0
• XParsec 0.4.0
• DbFlow 0.8.2

Might not be a huge audience here, but I wanted to announce that. FSharp.Data.Npgsql is now part of fsprojects, thanks to @dsyme for the nudge. This should make maintenance easier.. It's a #typeprovider wrapper in #fsharp for #postgres that allows you to just point your code at a database and […]

— Darren (@dplattsf.sfba.social.ap.brid.gy) 2026-03-27T17:41:03.000Z

That’s all for now. Have a great week.

If you want to help keep F# Weekly going, click here to jazz me with Coffee!

Welcome to F# Weekly,

A roundup of F# content from this past week:

News

• NBomber Studio 0.6.2 | NBomber
• F# Meetup (Recorded at NRK edition), Wed, Mar 25, 2026, 5:30 PM | Meetup

11 years ago I’ve made first commit on the project that would later be known as Ionide. A lot has changed over all those years, but one thing remains – the biggest value of the project has been meeting awesome people from F# community, many of whom I’m proud to call friends.#fsharp

— Krzysztof Cieslak (@kcieslak.io) 2026-03-17T15:35:04.511Z

Microsoft News

• Our commitment to Windows quality | Windows Insider Blog
• RT.Assistant: A Multi-Agent Voice Bot Using .NET and OpenAI – .NET Blog
• Accelerating .NET MAUI Development with AI Agents – .NET Blog
• Foundry Agent Service is GA: private networking, Voice Live, and enterprise-grade evaluations | Microsoft Foundry Blog
• Remote MCP Server preview in Microsoft Foundry – Azure DevOps Blog
• Azure Skills Plugin – Let’s Get Started! | All things Azure
• Awesome GitHub Copilot just got a website, and a learning hub, and plugins! – Microsoft for Developers
• Visual Studio Code 1.112

Videos

• ASP.NET Community Standup: Zstandard compression comes to .NET 11 – YouTube
• .NET Data Community Standup: How dotConnect + Entity Developer simplify your workflow – YouTube

Blogs

• RANSAC: estimating a model using very noisy data (part 2) · Mathias Brandewinder blog
• Si Fi Dev Ltd — F# Development, Consulting & Training – Simon Treanor
• Cooking with functions – Ricardo Tavares
• Samir Parikh: Learning to Read the F# Documentation
• Samir Parikh: Using F# Sequences to Count Instances of the 13th of the Month

Highlighted projects

• immersus-machina/stream-scheme: Streaming xlsx. By design — and nothing more. · GitHub
• adz/CodecMapper: High-performance, AOT-friendly serialization for F# built around explicit schemas · GitHub
• code-shoily/yog-fsharp: A graph library for F#. A port of Gleam’s Yog. · GitHub
• InitusNovus/Signal-CANdy: DBC to C Code Generator written in F# · GitHub
• tonyx/Sharpino: A little F# event-sourcing library. · GitHub

New Releases

• SwaggerProvider 3.1.0
• FSharp.Data 8.1.2
• Pulsar.Client 3.13.5
• FSharp.Control.AsyncSeq 4.10.0
• FSharp.Control.TaskSeq 1.0.0
• Feliz.Template 5.1.0
• NextFs 0.9.0
• SageFs 0.6.209
• Feliz 3.2.0
• Polars.FSharp 0.4.0
• Fable.Actor 5.0.0-rc.4
• FSharp.SourceDjinn 0.4.0
• FockMap 0.8.0
• linq2db.FSharp 6.2.1
• StreamScheme.FSharp 0.2.2
• Fable.Remoting.OpenAPI.Giraffe 0.0.3
• Fable.Remoting.OpenAPI.Suave 0.0.3
• CodecMapper 0.3.0
• Yog.FSharp 0.5.0
• SignalCandy 0.4.0
• Prime 11.5.0
• Sharpino.Templates 1.4.0
• Fable 5.0.0-rc.5

First Repo Assisted release of SwaggerProvider is out #fsharp github.com/fsprojects/S… 🎉🤖

— Sergey Tihon 🦔🦀 (@sergeytihon.com) 2026-03-22T19:45:35.427Z

That’s all for now. Have a great week.

If you want to help keep F# Weekly going, click here to jazz me with Coffee!

Welcome to F# Weekly,

A roundup of F# content from this past week:

News

• F# in .NET 11 Preview 2 – Release Notes
• Safe Clean Architecture
• RFC: How should Fantomas handle lambda expressions that would change semantics on a single line?

F# in .NET 11 Preview 2 – Release Notes #fsharp github.com/dotnet/core/…

— Sergey Tihon 🦔🦀 (@sergeytihon.com) 2026-03-14T09:42:27.657Z

Microsoft News

• .NET 11 Preview 2 is now available! – .NET Blog
• Modernize .NET Anywhere with GitHub Copilot – .NET Blog
• .NET 10.0.5 Out-of-Band Release – macOS Debugger Fix – .NET Blog
• .NET and .NET Framework March 2026 servicing releases updates – .NET Blog
• Extend your coding agent with .NET Skills – .NET Blog
• Aspire Conf is Coming! Join us Live on March 23 | Aspire Blog
• Build a real-world example with Microsoft Agent Framework, Microsoft Foundry, MCP and Aspire – Microsoft for Developers
• Announcing the Azure Skills Plugin | All things Azure
• Visual Studio Code 1.111
• Visual Studio Dev Essentials: Free, Practical Tools for Every Developer  – Visual Studio Blog

Videos

• Llama.fs – YouTube
• Clef Language – WebView and Native Application Rendering – YouTube
• Blazor Community Standup – ASP.NET Core & Blazor updates in .NET 11 Preview 2 – YouTube
• .NET AI Community Standup: Real-World AI Agent Architecture in .NET – YouTube
• Demystifying Workflows with Microsoft Agent Framework – YouTube
• AI-First Mobile Development: Live Coding with Copilot and .NET MAUI – YouTube

Blogs

• Samir Parikh: Higher Order Functions in F#
• Samir Parikh: Functions in F#
• Why I Hope I Get to Write a Lot of F# in 2026 · cekrem.github.io
• PartitionWith in C# | Celso Jr
• MOTHER, Metaprogramming, and the Meta Language – Ben Copeland

📖 After four months of work, the book “Safe Clean Architecture” is now complete 🎉🔗 Check it out online.rdeneau.gitbook.io/safe-clean-a…#fsharp #free #e-book

— (@romain-deneau.bsky.social) 2026-03-13T09:35:04.083Z

Highlighted projects

• dbrattli/Fable.Actor: F# Actors for Fable and Beam
• WillEhrendreich/SageFs: Sage Mode for F# development — REPL with solution or project loading, Live Testing for FREE, Hot Reload, and session management.
• goswinr/Earcut: The fastest and smallest polygon triangulation library. Ported to F# from Mapbox
• adz/CodecMapper: High-performance, AOT-friendly serialization for F# built around explicit schemas

New Releases

• FSharp.Core 11.0.100
• Fastoch 0.11.0
• Fidelity.CloudEdge.Runtime 0.1.7
• Fidelity.CloudEdge.Management 0.1.7
• NBomber 6.3.0
• FAkka.Akka.Persistence.FSharp 1.5.62
• FSharp.Compiler.Service 43.12.201
• FSharp.Data 8.1.0
• SignalCandy 0.3.2
• SageFs 0.6.163
• Str 0.23.0
• ArrayT 0.26.0
• ResizeArrayT 0.26.0
• Earcut 3.0.21
• CodecMapper 0.1.0
• StarFederation.Datastar 1.2.1
• FSharp.Control.AsyncSeq 4.8.0
• FSharp.Formatting 22.0.0-alpha.2
• fantomas 8.0.0-alpha-007
• Fable 5.0.0-rc.3
• AgentNet 1.0.0-rc.4

That’s all for now. Have a great week.

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