Falco 5.0.0-alpha3

This is a prerelease version of Falco.
There is a newer version of this package available.
See the version list below for details.
dotnet add package Falco --version 5.0.0-alpha3
                    
NuGet\Install-Package Falco -Version 5.0.0-alpha3
                    
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="5.0.0-alpha3" />
                    
For projects that support PackageReference, copy this XML node into the project file to reference the package.
<PackageVersion Include="Falco" Version="5.0.0-alpha3" />
                    
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 5.0.0-alpha3
                    
#r "nuget: Falco, 5.0.0-alpha3"
                    
#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@5.0.0-alpha3
                    
#: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=5.0.0-alpha3&prerelease
                    
Install as a Cake Addin
#tool nuget:?package=Falco&version=5.0.0-alpha3&prerelease
                    
Install as a Cake Tool

Falco

NuGet Version build

open Falco
open Microsoft.AspNetCore.Builder

let wapp = WebApplication.Create()

let endpoints =
    // associate GET / to plain text HttpHandler
    [ Routing.get "/" (Response.ofPlainText "Hello World!") ]

// activate Falco endpoint source
wapp.UseFalco(endpoints)
    .Run()

Falco is a toolkit for building fast and functional-first web applications using F#. You can think of it as minimal API on steroids.

  • Built upon the high-performance components of ASP.NET Core.
  • Optimized for building HTTP applications quickly.
  • Seamlessly integrates with existing .NET Core middleware and libraries.

Key Features

Design Goals

  • Provide a toolset to build a working 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. The issue list of this repo is exclusively for bug reports and feature requests. For chronological updates refer to the changelog is the best place to find chronological updates.

If you want to stay in touch, feel free to reach out on Twitter.

Have an article or video that you want to share? We'd love to hear from you! To add your content, visit this discussion.

Community Projects

Articles

Videos

Contribute

Thank you for considering contributing to Falco, and to those who have already contributed! We appreciate (and actively resolve) PRs of all shapes and sizes.

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 guidelines 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

Built with ♥ by Pim Brouwers in Toronto, ON. 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 was computed.  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 was computed.  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 (5)

Showing the top 5 NuGet packages that depend on Falco:

Package Downloads
Falco.Htmx

HTMX Bindings for the Falco web toolkit.

Falco.OpenApi

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

Falco.Datastar

Datastar Bindings for the Falco web toolkit.

Falco.Bulma

Package Description

SpiralOSS.Falco.Datastar

Datastar Bindings for the Falco web toolkit.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last Updated
5.1.0 817 9/10/2025
5.0.3 230 9/9/2025
5.0.2 1,157 6/26/2025
5.0.1 466 6/26/2025
5.0.0 3,448 1/29/2025
5.0.0-rc2 177 1/25/2025
5.0.0-rc1 237 12/17/2024
5.0.0-beta5 154 12/9/2024
5.0.0-beta4 126 11/25/2024
5.0.0-beta3 130 11/24/2024
5.0.0-beta2 156 11/18/2024
5.0.0-beta1 176 11/1/2024
5.0.0-alpha5 268 10/21/2024
5.0.0-alpha4 180 10/18/2024
5.0.0-alpha3 142 10/17/2024
5.0.0-alpha2 132 9/29/2024
5.0.0-alpha1 109 9/22/2024
4.0.6 4,353 12/12/2023
4.0.5 525 11/16/2023
4.0.4 4,401 3/13/2023
4.0.3 991 1/1/2023
4.0.2 549 11/30/2022
4.0.1 451 11/23/2022
4.0.0 758 11/7/2022
4.0.0-rc1 252 11/2/2022
4.0.0-beta4 261 10/26/2022
4.0.0-beta3 260 10/25/2022
4.0.0-beta2 696 9/23/2022
4.0.0-beta1 252 9/13/2022
4.0.0-alpha2 250 9/11/2022
4.0.0-alpha1 291 8/29/2022
3.1.14 2,041 8/29/2022
3.1.13 795 8/11/2022
3.1.12 2,107 5/20/2022
3.1.11 1,275 2/8/2022
3.1.10 944 12/14/2021
3.1.9 562 12/6/2021
3.1.8 523 12/3/2021
3.1.7 937 9/24/2021
3.1.6 506 9/24/2021
3.1.5 517 9/24/2021
3.1.4 643 8/24/2021
3.1.3 671 8/4/2021
3.1.2 588 7/30/2021
3.1.1 584 7/27/2021
3.1.0 567 7/27/2021
3.1.0-beta8 389 7/7/2021
3.1.0-beta7 387 7/6/2021
3.1.0-beta6 406 7/6/2021
3.1.0-beta5 407 7/5/2021
3.1.0-beta4 355 7/5/2021
3.1.0-beta3 425 7/1/2021
3.1.0-beta2 383 7/1/2021
3.1.0-beta1 371 6/15/2021
3.0.5 1,712 6/14/2021
3.0.4 686 5/5/2021
3.0.3 710 4/10/2021
3.0.2 993 12/8/2020
3.0.1 674 12/1/2020
3.0.0 697 11/27/2020
3.0.0-alpha9 430 11/26/2020
3.0.0-alpha8 468 11/25/2020
3.0.0-alpha7 464 11/25/2020
3.0.0-alpha6 451 11/22/2020
3.0.0-alpha5 424 11/20/2020
3.0.0-alpha4 435 11/20/2020
3.0.0-alpha3 413 11/20/2020
3.0.0-alpha2 1,075 11/11/2020
3.0.0-alpha1 422 11/11/2020
2.1.0 908 11/11/2020
2.0.4 2,057 11/9/2020
2.0.3 741 10/31/2020
2.0.2 1,162 7/31/2020
2.0.1 700 7/20/2020
2.0.0 870 7/12/2020
2.0.0-alpha 505 7/7/2020
1.2.3 711 7/2/2020
1.2.2 669 6/29/2020
1.2.1 752 6/28/2020
1.2.0 758 6/23/2020
1.1.0 931 6/6/2020
1.0.10-alpha 491 5/13/2020
1.0.9-alpha 534 4/29/2020
1.0.8-alpha 494 4/29/2020
1.0.7-alpha 503 4/27/2020
1.0.6-alpha 488 4/24/2020
1.0.5-alpha 487 4/23/2020
1.0.4-alpha 484 4/22/2020
1.0.3-alpha 506 4/19/2020
1.0.2-alpha 505 4/19/2020
1.0.1-alpha 504 4/7/2020
1.0.0-alpha 504 4/6/2020