Development Tools

Bolero – tools and libraries to run F# applications in WebAssembly

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.

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

This is free and open source software.

Key Features

  • 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.

Website: fsbolero.io
Support: GitHub Code Repository
Developer: Loïc Denuzière and contributors
License: Apache License 2.0

Bolero is written in F#. Learn F# with our recommended free books and free tutorials.


Related Software

F# Web Frameworks
GiraffeNative functional ASP.NET Core web framework
SaturnImplements the server-side, functional MVC pattern
SuaveSimple web development F# library
WebSharperFull-stack, functional reactive web programming
FalcoToolkit for building fast, functional-first and fault-tolerant web applications
BoleroTools and libraries to run F# applications in WebAssembly
FelicityIdiomatic JSON:API
FrankF# computation expressions
FreyaModern functional stack for web programming

Read our verdict in the software roundup.


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