Falco 5.2.0

There is a newer prerelease version of this package available.
See the version list below for details.
dotnet add package Falco --version 5.2.0
                    
NuGet\Install-Package Falco -Version 5.2.0
                    
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="Falco" Version="5.2.0" />
                    
For projects that support PackageReference, copy this XML node into the project file to reference the package.
<PackageVersion Include="Falco" Version="5.2.0" />
                    
Directory.Packages.props
<PackageReference Include="Falco" />
                    
Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package.
paket add Falco --version 5.2.0
                    
#r "nuget: Falco, 5.2.0"
                    
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
#:package Falco@5.2.0
                    
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package.
#addin nuget:?package=Falco&version=5.2.0
                    
Install as a Cake Addin
#tool nuget:?package=Falco&version=5.2.0
                    
Install as a Cake Tool

Falco

NuGet Version build

open Falco
open Microsoft.AspNetCore.Builder

let wapp = WebApplication.Create()

wapp.Run(Response.ofPlainText "Hello world")

Falco is a toolkit for building functional-first, full-stack web applications using F#.

  • Built on the high-performance components of ASP.NET Core.
  • Seamlessly integrates with existing .NET Core middleware and libraries.
  • Designed to be simple, lightweight and easy to learn.

Key Features

Design Goals

  • Provide a toolset to build full-stack web application in F#.
  • Should be simple, extensible and integrate with existing .NET libraries.
  • Can be easily learned.

Learn

The best way to get started is by visiting the documentation. For questions and support please use discussions. For chronological updates refer to the changelog is the best place to find chronological updates.

Community Projects

Articles

Videos

Contribute

We kindly ask that before submitting a pull request, you first submit an issue or open a discussion.

If functionality is added to the API, or changed, please kindly update the relevant document. Unit tests must also be added and/or updated before a pull request can be successfully merged.

Only pull requests which pass all build checks and comply with the general coding standard can be approved.

If you have any further questions, submit an issue or open a discussion or reach out on Twitter.

Why "Falco"?

Kestrel has been a game changer for the .NET web stack. In the animal kingdom, "Kestrel" is a name given to several members of the falcon genus. Also known as "Falco".

Find a bug?

There's an issue for that.

License

Licensed under Apache License 2.0.

Product Compatible and additional computed target framework versions.
.NET net8.0 is compatible.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed.  net9.0 is compatible.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed.  net10.0 is compatible.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (7)

Showing the top 5 NuGet packages that depend on Falco:

Package Downloads
Falco.OpenApi

OpenAPI integration that provides a set of utilities for generating OpenAPI documentation from Falco routes.

Falco.Htmx

HTMX Bindings for the Falco web toolkit.

Falco.Datastar

Datastar Bindings for the Falco web toolkit.

Falco.UnionRoutes

Type-safe routing with discriminated unions and railway-oriented handler composition for Falco

L2Analytics.Deploy.Falco

Falco (ASP.NET Core) deployment target for L2Analytics.Deploy. Every Contract becomes a POST endpoint at its httpPath — the OpenAPI document generated by L2Analytics.Deploy.OpenApi describes this adapter's wire format exactly, with no envelope, unlike L2Analytics.Deploy.Lambda.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last Updated
6.0.0-beta1 148 7/27/2026
6.0.0-alpha2 145 4/17/2026
6.0.0-alpha1 147 2/9/2026
5.2.0 27,061 12/21/2025
5.1.0 9,962 9/10/2025
5.0.3 386 9/9/2025
5.0.2 1,921 6/26/2025
5.0.1 1,022 6/26/2025
5.0.0 6,733 1/29/2025
5.0.0-rc2 242 1/25/2025
5.0.0-rc1 308 12/17/2024
5.0.0-beta5 232 12/9/2024
5.0.0-beta4 194 11/25/2024
5.0.0-beta3 194 11/24/2024
5.0.0-beta2 236 11/18/2024
5.0.0-beta1 241 11/1/2024
5.0.0-alpha5 329 10/21/2024
5.0.0-alpha4 250 10/18/2024
5.0.0-alpha3 227 10/17/2024
5.0.0-alpha2 201 9/29/2024
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