Cursor
GitHub Copilot
Claude Code
Augment Code
CodeRabbit
Synlets
5dive
Devin is an autonomous agent that solves engineering tasks through the use of its own shell, code editor, and web browser.

JSFiddle
CodeSandbox
GitHub
replit
VS Code
Pastebin.com
JS Bin
A front end web development playground.
Which is more popular?
Based on our record, CodePen seems to be a lot more popular than Devin. While we know about 513 links to CodePen, we've tracked only 1 mention of Devin.
Website, pricing, platforms and company facts side by side.
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| Website | cognition.com | codepen.io |
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An editorial look at what each product does well and who it suits.

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Walkthroughs and reviews on video.
Devin review: is it a better AI coding agent than Cursor?
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How often each product is chosen within a category, 0–100% relative to the other.

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External articles and on-site reviews we used to compare the two products.

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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.
Recommendations tracked on public social media and blogs since March 2021.

Cognition, "Introducing Devin, the first AI software engineer" (March 12, 2024): the launch post; the 13.86% SWE-bench self-report and unassisted-evaluation details. - Source: dev.to / 3 months ago
> 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
When comparing Devin and CodePen, you can also consider the following products.

The AI-first Code Editor. Build software faster in an editor designed for pair-programming with AI.
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Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle code editor.
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Your AI pair programmer. With GitHub Copilot, get suggestions for whole lines or entire functions right inside your editor.
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Transform hours of debugging into seconds with a single command. Experience coding at thought-speed with Claude's AI that understands your entire codebase—no more context switching, just breakthrough results.
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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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