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Tech riderRev. 22 Sept 2026

Fable

Ch 136.4of 28 Code Transpilers
  1. 1Runs onWeb
  2. 2CostsNot stated by the maker
  3. 3Source languages1 languages
  4. 4Target languages7 languages
  5. 5CLI accessYes
  6. 6Conversion modesource-to-source
5 lines stated Written from the maker's own pages: fable.io
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The Fable homepage

Overview

Fable is ranked #13 of 28 in code transpilers on Specifiction. It runs on Web.

Compared on code transpilers

Source languages
1 languagesfable.io
Target languages
7 languagesfable.io
CLI access
Yesfable.io
Conversion mode
source-to-sourcefable.io

Facts

What it does
Fable is a compiler that lets developers use F# to build applications for multiple target languages.fable.io · 4 Oct 2026
Stable targets
JavaScript and TypeScript are listed as stable targets.fable.io · 4 Oct 2026
Other targets
Dart and Python are listed as beta, Rust as alpha, and PHP and Beam (Erlang) as experimental.fable.io · 4 Oct 2026
JavaScript output
The homepage says Fable produces readable JavaScript compatible with ES2015 standards and tooling such as Webpack.fable.io · 4 Oct 2026
JavaScript interop
Fable supports importing JavaScript modules and using NPM packages from F# code.fable.io · 4 Oct 2026
Project setup
The getting started guide installs Fable as a .NET tool and adds Fable.Core to an F# project.fable.io · 4 Oct 2026
Build workflow
The CLI supports release, watch, and clean commands, plus options such as output directory and source maps.fable.io · 4 Oct 2026
Editor support
The homepage names Visual Studio Code and JetBrains Rider as editor choices.fable.io · 4 Oct 2026
Libraries
The documentation lists Fable.Core, Fable.Browser.Dom, Fable.Elmish.React, and Thoth.Json as libraries available for Fable projects, and cautions that not all NuGet libraries work with Fable.fable.io · 4 Oct 2026
Python requirement
Fable Python targets Python 3.12 or higher; Python 3.10 and 3.11 are deprecated.fable.io · 4 Oct 2026
Beam requirement
The Beam setup guide requires Erlang/OTP 25 or higher and rebar3.fable.io · 4 Oct 2026
Online access
The homepage links to an online Fable REPL.fable.io · 4 Oct 2026

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Where it ranks on Specifiction

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Sources