F# Weekly #41, 2026 – Paket 11 & Firelight

Welcome to F# Weekly,

A roundup of F# content from this past week:

News

• Paket 11
• Firelight: Web Components for F#

Microsoft News

• A faster, lighter C# Dev Kit
• Build Agentic UI with the new Blazor AI components
• UWP and WinUI 3 apps: UI testing with MSTest
• Adding persistence to the Aspire dashboard | Aspire Blog
• Bringing Native AOT to the Aspire dashboard | Aspire Blog
• UWP and WinUI 3 apps: UI testing with MSTest – .NET Blog
• Introducing WinDbg MCP: Debug with natural language, grounded in evidence – Performance and Diagnostics
• From Spec-First to Enterprise-Ready: Extending GitHub Spec Kit – Microsoft for Developers

New release of Paket (/! last version with legacy mode) github.com/fsprojects/P… #fsharp

— (@fpellet.bsky.social) 2026-10-05T17:14:00.482Z

Videos

• Felienne Hermans – Using F# and genetic programming to play computer bridge – NewCrafts 2016
• Blazor Community Standup: Build agentic experiences with the Blazor AI Components
• .NET MAUI Community Standup: Inside GnollHack: Cross-Platform Game Development with .NET MAUI
• Let’s Learn GitHub Copilot SDK – .NET Edition

Blogs

• Study notes: automatic differentiation (part 1) – Mathias Brandewinder
• Event Sourcing: fun with bi-temporal timelines – Urs Enzler
• We Shape Our Tools: Why Functional Programming? – DEV Community

Highlighted projects

• roboz0r/Firelight: Web Components for F#. Powered by Lit · GitHub
• shayanhabibi/Ranvier: Fine-grained reactive computation for .NET · GitHub

New Releases

• Paket 11.0.0
• NBomber.Contracts 6.4.0
• fantomas 8.0.8
• SageFs 0.6.906
• Expecto 11.1.1
• Pulsar.Client 3.19.8
• Fable 5.20.0
• Farmer 1.9.33
• SwaggerProvider 4.2.1
• Prime 11.5.5
• Fabulous 10.0.3
• SqlHydra.Query 5.1.0
• Felicity 0.25.0
• Funogram 3.0.6
• Dmx.GslCore 0.6.0
• Xake 3.5.0.23
• telplin 0.17.1
• Fesh 0.34.0
• Fuaran.Core.Wire 0.36.0
• PersistedConcurrentSortedList 10.1.401
• Swate.Components 2.5.0
• Oxpecker.Htmx 4.1.0
• TestPrune.Core 13.3.3
• FsLangMcp 0.19.0
• Mibo.Templates 6.0.0
• fsharp-refactor 0.8.42
• CommandTree 0.13.0
• FsLiveDocs 0.13.0
• Axial 0.10.0
• Fuuga 1.0.36
• Earcut 3.2.41
• ConstructStyleSheetsPolyfill.Unofficial 2.21.3
• zest 0.9.0
• Lit.Server.Unofficial 2.21.3
• Falco.UnionRoutes 0.3.5
• Numerics.NET.FSharp 10.8.0
• FunStripe.Core 3.0.0
• SvgPath 3.0.0
• VersionControlService.Abstractions 0.2.1
• ArgyleConcepts.FSharp.Actor 1.0.0
• Beardmouse.Thoth.Json.Core 0.9.1
• Frostlake.FSharp 0.2.0
• FsForge 0.0.1
• Scowalt.NoCommentsAnalyzer 0.1.2
• tsr-StackedFlow 1.0.0

Another finding of the F# discord"Firelight: Web Components for F#"> Firelight is a set of F# bindings for Lit, compiled with Fableroboz0r.github.io/Firelight/#dotnet #fsharp #webdev

— Angel Munoz (@tunaxor.me) 2026-10-05T03:08:09.157Z

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