
CodePen
CodeSandbox
replit
Pastebin.com
JS Bin
VS Code
GitHub
Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle code editor.

Sibelius
MuseScore
Knock
Finale
Flat for Education
MuseScore.org
Guitar Pro
Online collaborative music score and tab editor, accessible from any device

Which is more popular?
Based on our record, JSFiddle should be more popular than Flat. It has been mentioned 204 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | jsfiddle.net | flat.io |
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In their own words, as submitted to SaaSHub.


No description of JSFiddle yet.
A great and easy-to-use music notation editor on iOS. Flat is an app that lets you create, edit, playback, print and export your sheet music and tabs. Cloud-based, you can also edit scores with your web browser and collaborate in real-time across devices with friends and colleagues.
What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Dashboard JSFiddle Online JavaScript Editor jQuery, Angular, Backbone, Underscore, Knockout, Y
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing JSFiddle and Flat.
Flat's answer:
Extremely Intuitive Layout, Collaboration feature and cross-device usage
Flat's answer:
Flat is perfect for beginners and professionals alike.
Share your experience with using JSFiddle and Flat. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Test your javascript, CSS, HTML or coffeescript online with jsfiddle code editor. Jsfiddle – code playground.
JSFiddle cannot be used to host code on your server. The code has to be on JSFiddle and is public all the time.
What is missing from JSFiddle is live previews. You have to basically refresh the page by clicking on the play button. And compared to other playgrounds, JSFiddle is probably the slowest. Another slightly frustrating...
We have no reviews of Flat yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Https://jsfiddle.net/ used to be also very popular, I see that it is still available, but haven't used it in a while. Which other alternatives do people use now days? - Source: Hacker News / about 2 months ago
Coding is like learning a new language—you must practice by writing code, not just reading about it. Use free online editors like CodePen, JSFiddle, or Replit to experiment. - Source: dev.to / about 1 year ago
As you embark on these projects, take your time to familiarize yourself with HTML tags and CSS properties. Use online tools like CodePen or JSFiddle to experiment with your code and visualize your results. - Source: dev.to / over 1 year ago
Unless a piece you want has been recreated or arranged on MuseScore or flat.io, you must buy your own music unless someone wants to give some old music to you. Source: over 3 years ago
I was able to do this with flat.io. Source: over 3 years ago
The web-based options are, unsurprisingly, more limited. flat.io is pretty bad, Noteflight is better but still very limited and quite bad to use. There's some more niche stuff like Unison but it might not be the most accessible. Source: over 3 years ago
When comparing JSFiddle and Flat, you can also consider the following products.


Sibelius is a virtual score creation tool which allows composers to easily create new piano scores, developed by Avid.
Compare Sibelius to JSFiddle or Flat:


Our goal is to let musicians from all over the world create and share their works, as well as to make learning music exciting, easy and available for all.
Compare MuseScore to JSFiddle or Flat:

Code, create, andlearn together. Use our free, collaborative, in-browser IDE to code in 50+ languages — without spending a second on setup.
Compare replit to JSFiddle or Flat:
