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Top 16 JavaScript Playground Projects
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Project mention: Azure Cosmos DB Playground: Learn and experiment with queries in your browser | dev.to | 2026-01-13
Codapi: It is a lightweight sandbox server designed for interactive documentation, code examples, and learning environments. In the playground, Codapi manages the creation of isolated Docker containers for each query execution. This ensures that each user’s code and data are executed in an ephemeral environment. Codapi JavaScript widget (codapi-js) is used for the playground frontend integration, which invokes the Codapi API for code execution in the sandbox.
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DataFormsJS
🌟 DataFormsJS 🌟 A minimal JavaScript Framework, standalone React and Web Components, and JSX Compiler for rapid development of high quality websites and single page applications.
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mdown-editor
A markdown editor playground with preview panel written in Angular with html5, css3 and javascript
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NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
JavaScript Playground discussion
JavaScript Playground related posts
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Release 0.4 // Final PR
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Release 0.4 // The Plan
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Hackoberfest: Part 4
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Hackoberfest: Part 3
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All about Docker Part 1
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My kid loves computers. I would like him to start programming, just for fun to see if it is something for him. But how to start, what type of programming language that is appealing. Books? I mean, we can start with Lisp, but how long will attention hold? Please advise, thanks.
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Fully client side JSFiddle alternative designed for mobile with offline support
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A note from our sponsor - SaaSHub
www.saashub.com | 14 Jun 2026
Index
What are some of the best open-source Playground projects in JavaScript? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | play-with-docker | 3,191 |
| 2 | sqlime | 1,061 |
| 3 | layer5 | 1,044 |
| 4 | Workbench | 835 |
| 5 | codapi-js | 612 |
| 6 | DataFormsJS | 197 |
| 7 | htmx-playground | 186 |
| 8 | webden | 166 |
| 9 | pykidos.github.io | 47 |
| 10 | HolyC-interpreter | 42 |
| 11 | codestage | 31 |
| 12 | jsden | 13 |
| 13 | vanilla-worker-playground | 3 |
| 14 | Casual-Playground | 3 |
| 15 | mdown-editor | 2 |
| 16 | fourier | 1 |
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