Sergey Tihon's Blog

Welcome to F# Weekly,

A roundup of F# content from this past week:

News

• F# in .NET 11 Preview 6 – Release Notes
• Angel D. Munoz: Mibo 3.0.0 released — MonoGame 3.8.5 with Vulkan and DX12 support

F# in .NET 11 Preview 6 – Release Notes #fsharp github.com/dotnet/core/…

— Sergey Tihon 🦔🦀 (@sergeytihon.com) 2026-07-19T06:49:12.257Z

Microsoft News

• .NET 11 Preview 6 is now available!
• CoreCLR Progress and the Mono Timeline for .NET MAUI
• Announcing .NET Modernization for Beginners
• Visual Studio Code 1.129
• Built-in Agent Skills Bring .NET and Azure Expertise into Visual Studio – Visual Studio Blog

Videos

• F# Tutorial: How to create a cool little ASCII table!
• Blazor Community Standup: Generative UI with AG-UI & A2UI
• .NET AI Community Standup: What’s New: Agents, Local AI, and More! 🚀
• Higher-Order Patterns!! via… Subtypes? ft. Scala and F#

Blogs

• Urs Enzler: Event Sourcing — Undo Set/Remove-Based Bi-Temporal Events (Part 13)
• Opining Upon Reflection – Clef Programming Language

Highlighted projects

• MoiraeSoftware/Myriad — Myriad is a code generator for F#
• ScottArbeit/Grace — Grace Version Control System written in F# with Orleans and cloud-native design
• zest-ssg/zest — F#-powered static site generator with template-as-code and no Node.js required
• HelgeSverre/fedit — A small terminal text editor written in F# with multi-buffer, undo/redo, and seven themes

I've just put Myriad inside a TypeProvider.“I felt myself on the edge of the world; peering over the rim into a fathomless chaos of eternal night.”- H.P. Lovecraft#fsharp

— Dave Thomas (@7sharp9.bsky.social) 2026-07-14T22:15:06.499Z

New Releases

• Argu 6.2.5
• Thoth.Json 13.0.0
• Fable 5.11.0
• FSharp.Interop.Dynamic 9.0.1
• SQLProvider 1.5.26
• Feliz.Bulma 3.1.0
• FsSpreadsheet.ExcelIO 7.0.0
• WoofWare.Myriad.Plugins 10.2.2
• WoofWare.Myriad.Plugins.Attributes 3.8.6
• Prime 11.5.2
• Nu 15.5.2
• Funogram 3.0.5
• BioFSharp 3.1.0
• HODI 2.3.0
• Mibo.Templates 3.0.0
• Fable.Logging 0.12.7

Mibo 3.0.0 is outThis release is quite minimal but does bring breaking change for MonoGame users.Mibo now supports MonoGame 3.8.5 which brings Vulkan and DX12 among other changes#dotnet #fsharp #monogame

— Angel Munoz (@tunaxor.me) 2026-07-18T20:43:27.350Z

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

• SharpLsp – Open Source C# and F# Language Server for VS Code, Zed, and More
• Deslop — Live MCP + LSP duplicate-code server for AI agents

Microsoft News

• Modernize .NET applications in the GitHub Copilot app
• Announcing TypeScript 7.0 – TypeScript
• Let’s Learn GitHub Copilot App – Free Virtual Training Event – Microsoft for Developers
• Visual Studio Code 1.128
• Agent Skills for .NET Is Now Released | Microsoft Agent Framework
• Don’t rewrite your CLI for agents – Microsoft for Developers

Videos

• Blazor Community Standup: WebMCP in Action with Blazor

Blogs

• Mathias Brandewinder: Drawing mountains: shadows
• Urs Enzler: Event Sourcing — Set-and-Remove-Based Bi-Temporal Events (Part 12)
• Faisal Waris: Optimizing a speech-to-speech model by porting it to ONNX

🚀 Fable 5.7.0 is officially live! 🎉This release brings massive performance upgrades under the hood for Python:- DU pattern matching: 6-10x speed up! 🏎️ – Sequences: 1.6x faster!#fsharp #fablecompiler

— Maxime (@mangelmaxime.bsky.social) 2026-07-10T15:16:58.880Z

Highlighted projects

• Neftedollar/FsLangMCP — MCP server that gives AI coding agents (Claude Code, Cursor, Copilot) real FCS/FSAC compiler intelligence for F#
• TheFellow/fkyeah — F# pipeline engine for multi-stage AI workflows and LLM orchestration
• tonyx/Sharpino — A little F# event-sourcing library.
• fwaris/Chroma_ONNX — FlashLabs Chroma to ONNX plus F# This workspace converts FlashLabs/Chroma-4B to ONNX and runs it from F# with ONNX Runtime.

New Releases

• Pulsar.Client 3.17.0
• Fable 5.7.0
• Mibo 2.0.0
• FsLexYacc 11.4.0
• FsLexYacc.Runtime 11.4.0
• Feliz.Recharts 5.1.1
• FsSpreadsheet 7.0.0
• FSharp.Idioms 1.5.11
• FSharp.Azure.Quantum 1.4.6
• Fun.OData.Query 3.1.0
• Songhay.Modules.Publications 10.0.0
• HtmlTypeProvider 0.9.0
• Sharpino.Templates 1.6.0
• ProcessKit 2.4.0
• FunStripe.Core 2.2.0
• Orleans.FSharp.Runtime 3.0.1
• TestPrune 5.0.0
• Fuuga 1.0.14
• Hegel 0.1.4

Mibo 2.0.0 has been released!Write your Indie Games in F# whether it is Turn Based, Platformer, FPS, RPG, 2D, 3D, Low poly etc…Target Raylib or MonoGame or even Headless to power your game server.#dotnet #fsharp #gamedev #monogame #raylib

— Angel Munoz (@tunaxor.me) 2026-07-09T00:55:00.767Z

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

• .NET 8 and .NET 9 will reach End of Support on November 10, 2026
• MCP Beyond the Chat Window: Build Diagnostics in CI
• SkiaSharp 4.0 is here: announcing the first stable release
• Packaging and Package Identity for .NET apps with WinApp CLI on Windows
• Visual Studio Code 1.127
• Access GitHub Copilot in JetBrains – GitHub Copilot Is Now a Native Agent in JetBrains AI Assistant
• Visual Studio June Update – Track Your Usage, Trust Your Tools – Visual Studio Blog
• Automating your Visual Studio extension builds with GitHub Actions – Visual Studio Blog

Videos

• Xah Talk Show Ep800. learning fsharp with ai, walk dir. find string. call shell command.
• .NET AI Community Standup: Why Orleans for AI Agents
• .NET MAUI Community Standup: SkiaSharp 4 has arrived!
• .NET Day of Agentic Modernization 2026

Highlighted projects

• FidelityFramework/Composer: A compiler that brings F#’s elegance and precision to systems programming through MLIR and various backends
• Lanayx/Oxpecker: Backend and Frontend F# frameworks
• fs-fio/fio: 🪻 A Type-Safe, Purely Functional Effect System for F#
• tommililja/Farse: Simple, explicit JSON parsing for F# using System.Text.Json
• myowndb/myowndb: This is the code powering MyOwnDB. It is shared under the AGPL v3 license.
• It is developed with the F# language.

New Releases

Fable 5.5 is out 🎉This release have a strong focus on fixing bug for JavaScript/TypeScript targets.It is also trying to make writing cross-target code easier. Thanks to `Compiler.is*` target detection as an alternative to compiler directives.github.com/fable-compil…#fsharp #fablecompiler

— Maxime (@mangelmaxime.bsky.social) 2026-07-01T09:32:14.418Z

• Fable 5.5.0
• F# Tree-sitter 0.3.1
• Fuuga 1.0.12
• Prismatic 1.0.51
• Akka.FSharp 1.5.70
• Hedgehog 2.0.4
• WebSharper.Compiler 10.1.6.676
• Rezoom.SQL.Provider.SQLite 1.1.0
• PersistedConcurrentSortedList 10.1.301.3
• Euclid 0.42.0
• SQLProvider.PostgreSql 1.5.25
• Songhay.Modules 10.0.0
• FSharp.Compiler.SyntaxTreeX 43.12.204
• HeterogeneousCollections 1.1.5
• ShapeSifter 1.1.25
• Farse 0.12.4
• FSharp.Azure.Quantum 1.4.4
• FAkka.Akka.FSharp 1.5.69
• FAkka.Akkling 1.569.101.301
• FSharp.ReactiveWpf 0.0.13
• FSharp.Azure.Quantum.Topological 0.4.4
• Fss-lib.Builder 3.0.1
• FsLangMcp 0.12.1
• Numerics.NET.FSharp 10.6.0
• TestPrune.Falco 2.0.3
• Frank.Analyzers 7.2.1
• DotnetMatplotlib 0.0.9
• Orleans.FSharp 3.0.1
• CrawlSage 0.2.0
• Yog.FSharp 0.6.0
• Faket 0.1.0
• Hegel 0.1.3

Mibo v2.0.0-rc-001 is out!Docs, samples and most things have been updated, templates are wip and will likely land soon. #dotnet #fsharp #gamedev #monogame #raylib

— Angel Munoz (@tunaxor.me) 2026-07-02T05:39:39.627Z

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:

In part 11 of my event sourcing series, I discuss consistency and why we don't use aggregates or dynamic consistency boundaries to solve it:www.planetgeek.ch/2026/06/23/e… #EventSourcing #dotnet #fsharp

— Urs Enzler (@ursenzler.bsky.social) 2026-06-23T08:20:00.650Z

Microsoft News

• AI-Powered MSBuild Investigation with the Microsoft Binlog MCP Server – .NET Blog
• Azure Functions MCP Extension: What’s New at Build 2026 – Azure SDK Blog
• Meet your agent harness and claw | Microsoft Agent Framework
• Visual Studio Code 1.126

Videos

• Avalonia 12 – Set Up Your Dev Environment in 9 Minutes
• ASP.NET Community Standup: Better AI for .NET developers with dotnet/skills
• .NET Data Community Standup: Temporal tables and constraints in SQL Server and PostgreSQL 18
• .NET AI Community Standup: Multi-Agent Apps with Aspire + MAF
• On .NET Live – An In-Depth Introduction to Agentics

Blogs

• Dag Brattli: Fable REPL now compiles F# to Erlang (BEAM)
• Urs Enzler: Event Sourcing — Aggregates, Dynamic Consistency Boundaries or What?
• SpeakEZ.tech: Between a Rocq and a Hard Case
• Tuomas Hietanen: FsLemming — Lemmings clone with F# MailboxProcessors
• Between Rocq & A Hard Case – Clef Programming Language

The Fable Repl has been updated to include BEAM, and now compiles F# code to Erlang 🥰 fable.io/repl/ #fsharp #fablecompiler

— Dag Brattli (@dbrattli.bsky.social) 2026-06-17T19:06:02.027Z

Highlighted projects

• MagnusOpera/FScript — Functional language interpreter, F#/ML inspired, with LSP support
• DataficationSDK/Verso — Extensible interactive notebook platform for .NET; runs in VS Code and the browser
• Thorium/FsLemming — Lemmings clone demonstrating F# message-passing MailboxProcessors
• AngelMunoz/Migrondi — Simple SQL migrations tool; 1.3.0 beta adds a GUI app and an MCP server

New Releases

• Fable.Core 5.1.0
• Navs 1.0.0
• NBomber 6.5.0
• WebSharper 10.1.6.676
• G-Research.FSharp.Analyzers 0.23.0
• FSharp.Analyzers.SDK 0.37.2
• Facil 3.0.0
• Fable.Python 5.3.0
• Frank 7.2.1
• Funogram.Telegram 10.1.0

F# Fable 5 + GitHub hosting! A few retro-spirit items:- Combination counting, how I learned to calculate as a kid: thorium.github.io/Kasino/- My 28-year-old 5-in-a-row ported: thorium.github.io/thomoku/- Cave-rocket clone: thorium.github.io/FsRocket/- Ice hockey: thorium.github.io/FsHockey/

— Tuomas Hietanen (@thoriumi.bsky.social) 2026-06-19T09:05:31.393Z

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

• AI-Powered MSBuild Investigation with the Microsoft Binlog MCP Server
• .NET at Microsoft Build 2026: Must Watch Sessions
• GitHub Copilot for JetBrains is moving to Copilot CLI as the default agent harness – Microsoft for Java Developers
• Announcing TypeScript 7.0 RC – TypeScript
• Visual Studio Code 1.125
• Use your own language model key in VS Code
• Make Visual Studio look the way you want – Visual Studio Blog
• Aspire in VS Code: the 13.4 developer loop | Aspire Blog
• Improving token efficiency for GitHub Copilot in VS Code
• Intelligent Terminal 0.1.1 is here: bash support, new slash commands, and more customization – Windows Command Line

Videos

• Introducing F#/Elm to a C#/JS Organization — Hazards and Wins — Func Prog Sweden
• Fifth Online Func Prog Sweden 2026 — Func Prog Sweden
• .NET Day of Agentic Modernization 2026 — .NET
• .NET AI Community Standup: Multi-Agent Apps with Aspire + MAF — .NET
• ASP.NET Community Standup: Boosting Razor Productivity — .NET
• On .NET Live – Demystifying Microsoft Agent Framework Middleware — .NET

Blogs

• SharpLsp Team — Why F# Is First-Class in SharpLsp
• Vladimir Shchur — Meet Oxpecker.Alpine and Oxpecker.Htmx beta
• Urs Enzler: Event Sourcing — Temporally Misplaced or Duplicated Events
• Romain Deneau — A real-world F# computation expression: short-circuiting computations

A short update about Oxpecker extension librariesmedium.com/@lanayx/meet…#fsharp #htmx #alpinejs #oxpecker

— Vladimir Shchur (@lanayx.bsky.social) 2026-06-18T15:30:56.965Z

Highlighted projects

• ScottArbeit/Grace — Grace Version Control System: a cloud-native, actor-model VCS built with F# and Orleans
• litesig/litecoin-multisig — Seven F# modules compiled to JavaScript via Fable, covering the full stack from BIP39 seed phrases to signed-and-broadcast PSBTs.
• HelgeSverre/mire — A retained-mode F# TUI runtime with diff-based rendering and Elmish/TEA loop for .NET 10
• gnrkr789/CrawlSage — An F#-first web crawling & scraping framework for .NET with HTML parsing DSL and polite-by-default crawl ops
• agentruntimecontrolprotocol/fsharp-sdk — F# / .NET reference SDK for ARCP (Agent Runtime Control Protocol)

New Releases

• NBomber.Contracts 6.2.1
• Expecto 11.1.0
• Fable 5.3.0
• Expecto.FsCheck 11.1.0
• DynamicObj 8.0.0
• SQLProvider 1.5.24
• Expecto.BenchmarkDotNet 11.1.0
• fsharp-analyzers 0.37.2
• Expecto.Hopac 11.1.0
• Akka.Persistence.FSharp 1.5.69
• Expecto.Diff 11.1.0
• Funogram 3.0.4
• FS.FluentUI 4.0.0
• fable-lit-fullstack-template 3.1.0
• TestPrune 4.3.0
• FunStripe.Core 2.1.0
• AgentNet 0.1.0
• CommandTree 0.7.0
• Falco.UnionRoutes 0.3.3
• Mire 0.7.0
• Mibo.Raylib v1.3.0

🚀 NBomber Studio 0.8.0 is out!lnkd.in/dQ6Jv8x8Highlights: • ⏰ Scheduled load test execution • ☸️ Enhanced Kubernetes Container Spec support • 🔐 More flexible auth configuration#dotnet #loadtesting #performance #devtools #nbomber #csharp #fsharp #testing #QA

— Anton Moldovan (@antyadev.bsky.social) 2026-06-19T19:32:12.977Z

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 5.1 and 5.2
• Rider 2026.2 EAP 5

Microsoft News

• .NET 11 Preview 5 is now available! – .NET Blog
• .NET at Microsoft Build 2026: Must watch sessions – .NET Blog
• Microsoft Build 2026 recap: vision, launches, and top sessions – Microsoft for Developers
• Join us for .NET Day on Agentic Modernization Livestream – .NET Blog
• Visual Studio Code 1.124
• PowerToys 0.100 is here: new Shortcut Guide, Command Palette improvements and much more! – Windows Command Line
• Windows App Development CLI v0.3.2 — bundling support, smarter initialization, and more – #ifdef Windows
• Review pull requests without leaving Visual Studio – Visual Studio Blog
• Distributed multi-agent systems with Aspire and Microsoft Agent Framework | Aspire Blog
• ICYMI: Inside the Microsoft Agent Framework: How we designed a layered SDK | Microsoft Agent Framework

From the .NET blog…In case you missed it earlier….NET at Microsoft Build 2026: Must watch sessionshttps://devblogs.microsoft.com/dotnet/dotnet-at-microsoft-build-2026/ #dotnet #NETMAUI #AI #ASPNETCore #csharp #NET11 #agenticweb #microsoftbuild #microsoftbuild2026

— Barret Blake (@barretblake.dev) 2026-06-09T01:45:02.1239160+00:00

Video

• Don Syme – The Agentic Repository Automation Revolution – AI Native DevCon June 2026
• Building for the agentic web with .NET 11
• .NET 11 in depth: Runtime, libraries, and SDK for the AI era
• Simplifying .NET Installs with dotnetup
• AI Building Blocks for .NET: Add intelligence to your C# Apps
• Taking your AI to the edge with .NET MAUI – YouTube
• .NET MAUI Community Standup: CoreCLR & Profiling your MAUI app
• On .NET Live – Fluent UI Blazor: The next step

Blogs

• Ian Erik Varatalu: Why Use F# for Scripting and Automation?
• Urs Enzler: Event Sourcing — Non-Bi-Temporal Events in a Bi-Temporal Stream
• Tony Lucca: Designing an AI-Ready Web Architecture with C#, F#, and Sharpino
• Control what your agentic workflows see with integrity filtering

Highlighted Projects

• gnrkr789/dotnet-matplotlib — A native .NET 10 port of Matplotlib in F# — pure-managed plotting (SVG, PNG, PDF) with a pyplot-style API and zero native dependencies.
• HelgeSverre/fedit — A small terminal text editor written in F# with multi-buffer, undo/redo, find, command palette, system clipboard, and seven themes.
• TheFellow/fkyeah — F# pipeline engine for multi-stage AI workflows and LLM orchestration.
• venikman/ACP-inspector — Debug and validate Agent Client Protocol (ACP) traffic — protocol conformance testing for AI coding agents.
• Thorium/FSharp.Azure.Quantum — Make quantum computing available for enterprise .NET developers via Azure Quantum.

New Releases

• Expecto 11.0.0
• Fable 5.2.0
• SQLProvider 1.5.23
• Thoth.Json 10.5.1
• DynamicObj 8.0.0
• Akka.FSharp 1.5.69
• Propulsion 3.0.2
• StarFederation.Datastar.FSharp 1.4.0
• Thoth.Json.Core 0.9.1
• YAMLicious 1.0.0
• XstarS.GuidModule 2.15.0
• Fli 1.1001.0
• Farse 0.12.3
• Feliz.Quill 2.2.0
• Oxpecker.Alpine 0.2.0
• DotnetMatplotlib 0.0.6
• FSharp.Azure.Quantum 1.4.1
• TypedConfig 1.0.0
• fable-lit-fullstack-template 3.0.0
• Mibo.Raylib v1.2.0
• Parquet.FSharp v0.5.0

Here's a cool new feature in the latest @rider.jetbrains.com 2026.2 preview build. Hooks Rider code intelligence into AI agentic workflows. Makes sure that generated code is correct, doesn't introduce warnings or suggestions, and matches your formattingRead more: blog.jetbrains.com/dotnet/2026/…

— Matt Ellis (@citizenmatt.bsky.social) 2026-06-09T11:46:10.852Z

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

• Visual Studio Code 1.123
• What’s Coming Next in Visual Studio: Our Microsoft Build 2026 Announcements – Visual Studio Blog
• Aspire Multi-repo Rollout at Scale with Agentic AI | Aspire Blog
• How Microsoft is migrating repositories to GitHub – Azure DevOps Blog
• Azure DevOps and GitHub: Journeying into the AI Era – Azure DevOps Blog
• Microsoft Agent Framework at BUILD 2026: Agent Harness, Hosted Agents, CodeAct, and more | Microsoft Agent Framework
• Announced at MS Build 2026: Azure Cosmos DB MCP Toolkit, Semantic Reranking, Global Secondary Indexes, and more! – Azure Cosmos DB Blog
• Work IQ: Production‑ready intelligence for every agent – Microsoft 365 Developer Blog
• Foundry IQ: Build smarter agents faster with unified knowledge and serverless retrieval | Microsoft Foundry Blog

Wolverine and Marten Just Got Better for F# Folks jeremydmiller.com/2026/06/01/w… #dotnet #fsharp #marten #wolverine

— Jeremy D. Miller (The Shade Tree Developer) (@jeremydmiller.bsky.social) 2026-06-01T19:16:59.870Z

Videos

• Translate merge function from Haskell to F# — Roel Van de Paar
• F# Calling inline function with type variables — Roel Van de Paar
• FSharp Functional Composition — Roel Van de Paar
• Microsoft Build 2026 | Satya Nadella Opening Keynote – YouTube
• On .NET Live — DuckDB & Orleans: When Fake Asynchrony Starves Your App!

Blogs

• Wolverine and Marten Just Got Better for F# Folks — Jeremy D. Miller
• Generating landscapes using Fractional Brownian Motion (FBM) — Marten Range
• Direct Light — Rendering Lights and Shadows on a Terrain in F# — Mathias Brandewinder
• Event Sourcing — The Not-So-Simple Bi-Temporal Basics — Urs Enzler

If you're following my ongoing blog post series on event sourcing and have any questions, feel free to ask here or in the post comments. Not just about event sourcing. I'm especially happy to answer questions about the F# samples.www.planetgeek.ch/tag/event-so… #EventSourcing #fsharp #dotnet

— Urs Enzler (@ursenzler.bsky.social) 2026-06-04T08:20:02.921Z

New Releases

• Fable.Compiler 5.1.0
• FSharp.Formatting.Literate 22.1.0
• WoofWare.Myriad.Plugins.Attributes 3.8.4
• WoofWare.Expect 0.8.6
• SQLProvider.* 1.5.21 — Database-specific providers released: PostgreSql, MsSql, DuckDb, SQLite, Oracle, MySql, MySqlConnector, Firebird, Odbc, MsAccess
• Bristlecone.Dendro 3.1.1 + Bristlecone.Charts.R 3.1.1
• TestPrune 4.0.2 + TestPrune.Core 4.0.2
• Numerics.NET.FSharp 10.5.0
• FsShelter.Multilang 5.2.1
• Kawa.FSharp 0.3.0
• Klip 2.0.1153
• ObservableCache 1.2.1
• NTResult 1.0.0
• Mibo.Raylib.Templates 1.0.0

New Mibo.Raylib ReleaseThis is a fast follow release, it adds support for normal maps in the 2D renderer and skeletal animation for the 3D render> dotnet add package Mibo.Raylib 1.1.0#dotnet #fsharp #gamedev #raylib

— Angel Munoz (@tunaxor.me) 2026-06-01T19:43:16.331Z

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

• Angel Munoz: Mibo.Raylib 1.0.0 is Out – F# micro framework for code-first Raylib games
• Loïc Denuzière: Domain Modeling Made Functional is in the Functional Programming Humble Bundle

Fable v5.1.0 is out 🎉Several bugfixes for most targets, and a few new features as well github.com/fable-compil… #fsharp #fablecompiler

— Dag Brattli (@dbrattli.bsky.social) 2026-05-29T15:15:23.711Z

Microsoft News

• Doing More with GitHub Copilot as a .NET Developer
• Give Your .NET MAUI Android Apps a Material 3 Makeover
• A hypothetical redesign of System.Diagnostics.Process to avoid confusion over properties that are valid only when you are the one who called Start – The Old New Thing
• How Azure Chaos Studio ships with hermetic Aspire end-to-end tests | Aspire Blog
• What’s new in Microsoft Foundry | May 2026 | Microsoft Foundry Blog
• Improve your agentic developer tools by grounding in Microsoft Learn – Microsoft for Developers
• Verification-driven tooling prompts for fast-moving codebases – ISE Developer Blog
• How AI coding agents actually use your technology – Microsoft for Developers
• Visual Studio Code 1.122
• Visual Studio May Update – Plan, Review, Refine – Visual Studio Blog

Videos

• Ryan Riley: Development Process using AI – Episode 403
• .NET AI Community Standup: .NET + AI at Build 2026: What’s Coming Next? – YouTube
• .NET Data Community Standup: 8 Real-World Query Anti‑Patterns (and How to Fix Them) – YouTube

Blogs

• Urs Enzler: Event Sourcing – Why We Built Our Own Library
• How I use Rider for F# web development | by Vladimir Shchur | May, 2026 | Medium

Highlighted projects

• EHotwagner/FS-Skia-UI: Experimental F# desktop UI toolkit built on SkiaSharp and Vulkan using an Elmish Model-View-Update model
• mrLSD/riscv-fs: F# RISC-V Instruction Set formal specification
• fable-compiler/Fable: F# to JavaScript, TypeScript, Python, Rust, Erlang and Dart Compiler (Fable 5.1.0 released)

New Releases

• Pulsar.Client 3.16.0
• Fable 5.1.0
• SQLProvider 1.5.21
• FsShelter 5.2.1
• WoofWare.Myriad.Plugins 9.1.6
• Fesh 0.32.3
• Bristlecone 3.1.1
• Polars.FSharp 0.5.0
• Fable.TypedJson 0.4.0
• UnionConfig 0.4.1
• CommandTree 0.5.1
• Falco.UnionRoutes 0.3.2
• Mibo.Raylib 1.0.0
• SwaggerProvider 4.1.0
• Serde.FS 1.0.0-beta.1

Mibo.Raylib 1.0.0 is out!An F# micro framework for building code-first games > dotnet new install Mibo.Raylib.Templates> dotnet new mibo-2d -o MyGame> cd MyGame && dotnet run#dotnet #fsharp #raylib #raylibcs

— Angel Munoz (@tunaxor.me) 2026-05-31T02:20:12.696Z

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

• Scriptorium – A family of focused F# libraries for building and testing F#/Fable applications.
• Announcing Elmish Land 2.0 Preview
• The Impact of Automated Repository Maintenance Assistance

A new test framework joining the F# ecosystem: Scriptorium.It is designed from the ground up as a cross-target testing framework, seamlessly supporting both F# .NET and Fable compilation targets (JavaScript only at the time of writing)fable-hub.github.io/Scriptorium/#fsharp #fablecompiler

— Maxime (@mangelmaxime.bsky.social) 2026-05-18T13:45:57.590Z

Microsoft News

• Improving C# Memory Safety
• Announcing Agent Governance Toolkit MCP Extensions for .NET
• Your dev loop is full of tribal knowledge | Aspire Blog
• NuGet Package Pruning: Cleaner Dependencies and Actionable Vulnerability Reports
• Securing Azure apps with Aspire enterprise networking | Aspire Blog
• Plan Before You Build: Introducing the Plan agent in Visual Studio – Visual Studio Blog
• Visual Studio Code 1.121

Videos

• .NET Data Community Standup: 8 Real-World Query Anti‑Patterns (and How to Fix Them)
• .NET AI Community Standup: .NET + AI at Build 2026: What’s Coming Next?
• On .NET Live: How Coding Standards Supercharge .NET Quality & Performance

Blogs

• Drawing mountains: setting up Bolero · Mathias Brandewinder
• Event Sourcing — Trade-offs of Event Versioning and Migrating Approaches – Urs Enzler

Oh nice, Scott Wlaschin's Domain Modeling Made Functional is in the Functional Programming Humble Bundle! #fsharp https://www.humblebundle.com/books/ultimate-functional-programming-pragmatic-programmers-books

— Loïc Denuzière (@tarmil.mastodon.tarmil.fr.ap.brid.gy) 2026-05-19T09:49:41.000Z

Highlighted projects

• DataficationSDK/Verso — Extensible interactive notebook platform for .NET. Every built-in feature, from the C# kernel to the dashboard layout, is an extension built on the same public interfaces available to third-party authors. Runs in VS Code and the browser.
• bartul/imperium — Strategy board game engine for Imperial (Mac Gerdts), exploring F# DDD and CQRS patterns
• fsprojects/FSharp.Control.R3 — Extensions and wrappers for using R3 reactive programming with F#
• ScottArbeit/Grace — Grace Version Control System built in F# with Orleans and cloud-native design

With the latest Notepad++ there is a Treesitter v1.1 plugin that supports #fsharp and many other languages

— Tuomas Hietanen (@thoriumi.bsky.social) 2026-05-20T21:10:39.213Z

New Releases

• FSharp.Compiler.Service 43.12.204
• WebSharper 10.1.5.674
• Feliz 3.3.3
• Feliz.UseElmish 5.0.0
• Akka.FSharp 1.5.68
• Akka.Persistence.FSharp 1.5.68
• FSharp.Formatting 22.0.1
• RProvider 3.0.0
• SageFs 0.6.273
• FSharp.Idioms 1.5.10
• FParsec-Pipes 1.3.0
• TickSpec 2.0.5
• Prime 11.5.1
• FSharp.HotChocolate 1.0.2
• DeviantArtFs 12.0.0
• Fesh 0.32.2
• linq2db.FSharp 6.3.0
• Farse 0.12.2
• XParsec 1.0.0
• FsLangMcp 0.9.2
• Hedgehog.Stateful 1.1.1

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

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