F# Weekly #51, 2025 – WebSharper 10 & Fidelity Framework

Welcome to F# Weekly,

A roundup of F# content from this past week:

News

• WebSharper 10.0
• Aspire 13.1 – Our holiday gift to you | Aspire Blog
• Microsoft.Testing.Platform Now Fully Supported in Azure DevOps – .NET Blog
• How to Build iOS Widgets with .NET MAUI – .NET Blog
• Build declarative agents for Microsoft 365 Copilot with MCP – Microsoft 365 Developer Blog
• What’s new in Microsoft Foundry | October and November 2025 | Microsoft Foundry Blog
• Introducing the Copilot Studio + Azure AI Search Solution – ISE Developer Blog

We have decided to put the Fidelity Framework elements in their own GitHub org. Everything is still in fairly early days. We don't expect many community contributions at this point but we wanted to be sure that folks will see the work progressing in the open. github.com/FidelityFram… #fsharp

— SpeakEZ.tech (@speakeztech.bsky.social) 2025-12-19T23:50:07.930Z

Videos

• ASP.NET Community Standup – ASP.NET Core planning kickoff for .NET 11
• On .NET Live | Showcasing an educational platform for quantum computing with custom Copilot
• HTMX and ASP.NET Core – I don’t know how to React – Maarten Balliauw – Azure Dev Summit 2025

Blogs & FsAdvent

• Taming the Brown Field with F#: Interactive Refactoring for Mature Codebases – halcwb
• F# and PowerShell >🎄? – jkone27
• Exploring MonoGame with F# – Angel Munoz
• Parsing and Lexing in F# – Owais
• F#, Microsoft Agent Framework, MCP and Bitcoin – F#, Microsoft Agent Framework, MCP and Bitcoin
• A Brief Introduction to Quantum Computing for F# Developers – Tuomas Hietanen

Highlighted projects

• ingted/FsPickler10 – .net 10 version of FsFickler with removedFormatter-based serialization.
• Thorium/FSharp.Azure.Quantum: Make Quantum computing available for enterprise .NET developers (and AI) via Azure.Quantum
• vbfox/MasterOfFoo: An F# library to allow using printf style strings in more places.
• CSBiology/YAMLicious – small YAML reader/writer inspired by Thoth.Json syntax!
• dburriss/fsagent: A small DSL and library for generating custom agent files for popular agent tools
• nightroman/FarNet.FSharp.Unquote: This package provides F# Unquote for FarNet.FSharpFar

New Releases

• FS.FluentUI 3.0.0
• FSharp.Azure.Quantum 1.3.3
• BlackFox.MasterOfFoo 2.1.1
• FS.FluentUI 3.0.0
• Hedgehog 2.0.1
• SqlHydra.Cli 3.1.1
• FS.FluentUI.Charts 1.0.2
• Fesh 0.31.0
• FsiX.Cli 0.1.2
• Feliz.Tailwind 4.0.2
• FsAgent 0.1.0
• FCQRS.Model 5.0.2
• FarNet.FSharp.Unquote 3.1.0
• linq2db.FSharp 6.1.0
• FSharp.AWS.DynamoDB 0.13.0-beta
• Fabulous.AST 2.0.0-pre05
• Fable 5.0.0-alpha.21
• fantomas 8.0.0-alpha-002

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!