I recently found this free online tool called dotnetfiddle. It was inspired by jsfiddle.
It allows you to write, test and share .NET code in your browser.

  • You can write in C#, VB.NET and F#
  • You can create Console, Script, MVC or Nancy projects.
  • It even pulls in NuGet packages.

It's good for testing out code snippets. You could show your non programmer friends or family members and it could be enough to make them want to learn more.

You can save your fiddles as private or public and you can share the link to your public fiddles for others to see.

You can also embed your fiddles in web page like below.

I will definitely be using this tool for sharing code on my blog posts.

Have a play around with it and let me know what you think. https://dotnetfiddle.net/

Paul Seal

Umbraco MVP and .NET Web Developer from Derby (UK) who specialises in building Content Management System (CMS) websites using MVC with Umbraco as a framework. Paul is passionate about web development and programming as a whole. Apart from when he's with his wife and son, if he's not writing code, he's thinking about it or listening to a podcast about it.

Proudly sponsored by


  • Moriyama build, support and deploy Umbraco, Azure and ASP.NET websites and applications.

  • CI/CD service for Windows, Linux and macOS
  • Build, test, deploy your apps faster, on any platform.

  • Custom stickers for startups, artists and brands.
  • Bespoke easy-apply, removable, custom brand stickers printed in the UK.

  • elmah.io is the easy error logging and uptime monitoring service for .NET.
  • Take back control of your errors with support for all .NET web and logging frameworks.
uSync Complete

  • uSync.Complete gives you all the uSync packages, allowing you to completely control how your Umbraco settings, content and media is stored, transferred and managed across all your Umbraco Installations.

  • More than a theme for Umbraco CMS, take full control of your content and design with a feature-rich, award-nominated & content editor focused website platform.

  • Affordable, Geo-Redundant, Umbraco hosting which gives back to the community by sponsoring an Umbraco Open Source Developer with each hosting package sold.