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607 Stars 40 Forks Apache License 2.0 460 Commits 44 Opened issues


Bolero brings Blazor to F# developers with an easy to use Model-View-Update architecture, HTML combinators, hot reloaded templates, type-safe endpoints, advanced routing and remoting capabilities, and more.

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Bolero - F# Tools for Blazor

Build status Nuget

Bolero is a set of tools and libraries to run F# applications in WebAssembly using Blazor.

It includes:

  • HTML functions using a familiar syntax similar to WebSharper.UI or Elmish.React.
  • Templating to write HTML in a separate file and bind it to F# using a type provider.
  • Elmish integration: run an Elmish program as a Blazor component, and Blazor components as Elmish views.
  • Routing: associate the page's current URL with a field in the Elmish model, defined as a discriminated union. Define path parameters directly on this union.
  • Remoting: define asynchronous functions running on the server and simply call them from the client.
  • F#-specific optimizations: Bolero strips F# signature data from assemblies to reduce the size of the served application.

Getting started with Bolero

To get started, you need the following installed:

  • .NET SDK 5.0. Download it here.


  • Run

To learn more, you can check the documentation.


Bolero welcomes contributions! If you wish to report issues, propose ideas, or submit pull requests, please use the issue tracker. See also the contributing guide to get started on working on this repository.

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