Option 1: Try F# on try.fsharp.org

logo TryFSharp enables you to try F# in an online editor/compiler without having to install anything on your computer. It includes example code for many of F#’s basic features. It’s based on the Fable 2 REPL.

Option 2: Try F# in repl.it

repl.it - Code and collaborate, without friction. Use our free, collaborative, in-browser IDE to code in 50+ languages — without spending a second on setup.

Option 3: Try Fable in the REPL

logo Try Fable in the REPL. Fable is a compiler powered by Babel that makes F# a first-class citizen of the JavaScript ecosystem.

Option 4: Try F# in Katacoda

Try F# in Katacoda. Learn new technologies using real environments right in your browser.

Option 5: Try F# in sharplab.io

SharpLab is a C#/VB/F# compiler playground, allows you to see compiled code including generated assembly code.

Option 6: Try F# on glot.io

logo Try F# on glot.io. An open source pastebin with runnable snippets and API.

Option 7: Try F# in CloudSharper

CloudSharper is an online web and mobile programming with big data and charting. Registration required.

Option 8: Try F# in Visual Studio Online

Visual Studio Online is an online service providing cloud-powered dev environments accessible from anywhere. It includes browser based IDE. F# support in VSO is powered by Ionide. Registration required, paid service.

Easiest way to get started with VSO is going to Ionide Playground repository and clicking VS Online - Create button

Option 9: Try F# in Bolero

Try F# in Bolero is an online F# playground running entirely in the browser using WebAssembly. Powered by Bolero.