F# Weekly #18, 2026 – Game Boy Emulator in F#

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
• Azizs2162/fyper — Build type-safe Cypher queries for Neo4j in F# using plain records, query expressions, and automatic parameterization

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.

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