
JSFiddle
CodeSandbox
GitHub
replit
VS Code
Pastebin.com
JS Bin
A front end web development playground.

GitHub
BitBucket
GitLab
Phabricator
SourceForge
Jira
SourceTree
Integrated, on-demand tools to build software faster, with less stress. Get started for free and find out why over 800,000 users trust Assembla.

Which is more popular?
Based on our record, CodePen seems to be more popular. It has been mentioned 513 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | codepen.io | assembla.com |
| Pricing | — | |
| Listed in |
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
Assembla is recommended for software development teams looking for a comprehensive project management platform with strong version control support. It is particularly suited for distributed teams and organizations that require integration with tools like Git, Perforce, and Subversion. It may also be a good fit for teams that need detailed tracking and reporting capabilities.
Walkthroughs and reviews on video.
What Is Codepen?
More videos
Assembla Review
More videos
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using CodePen and Assembla. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Codepen is a social network for developers to show off their work, ask and answer questions, and exchange ideas. It's like a Reddit for coding and design, with a large community of talented web developers.
Codepen is a social development environment that allows developers to showcase their work and experiment with HTML, CSS, and JavaScript in a collaborative space. Codepen’s focus on visual and interactive development...
Codepen is a social development environment for front-end designers and developers. Build and deploy a website, show off your work, build test cases to learn.
Assembla is a younger platform than JIRA but offers a broader range of functionality in its core product like git hosting, code deployment, agile tools, time tracking.
Assembla offers many functions right out-of-the-box that JIRA requires as an add-on, including subversion and git hosting, code deployment, agile tools, time tracking, and social media-style collaboration (message...
Recommendations tracked on public social media and blogs since March 2021.


> I vividly remember IE and many hacks to have css elements properly working in it… The common advice now is to only use CSS that is supported in the last two major versions of each major browser. You can check any css property's support... - Source: Hacker News / 2 months ago
Thank you, heartfelt... For sharing an artwork, a miracle! Just in case, have you considered publishing the work at platforms as CodePen, where genius Artists/People express their art, too, as you?: // https://codepen.io/. - Source: Hacker News / 3 months ago
Embed on DEV: If you prefer CodePen embed, create a Pen with that HTML and add to the post as: {% codepen https://codepen.io//pen/ %}. - Source: dev.to / 12 months ago
Tracking Assembla since Mar 2021.
When comparing CodePen and Assembla, you can also consider the following products.

Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle code editor.
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Originally founded as a project to simplify sharing code, GitHub has grown into an application used by over a million people to store over two million code repositories, making GitHub the largest code host in the world.
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Bitbucket is a free code hosting site for Mercurial and Git. Manage your development with a hosted wiki, issue tracker and source code.
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Create, review and deploy code together with GitLab open source git repo management software | GitLab
Compare GitLab to CodePen or Assembla:

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 CodePen or Assembla: