Use F# in the browser
Option 1: Try F# on try.fsharp.org
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
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
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