Plunker is an online community for creating, collaborating on and sharing your web development ideas.

CodePen is described as 'A communal platform for front-end development offering real-time previews, project building, and showcases, enhancing skills through challenges' and is a very popular Code Editor in the development category. There are more than 50 alternatives to CodePen, not only websites but also apps for a variety of platforms, including Mac, Windows, Linux and Self-Hosted apps. The best CodePen alternative is jsFiddle, which is free. Other great sites and apps similar to CodePen are Replit, Firebase Studio, CodeSandbox and JS Bin.
Plunker is an online community for creating, collaborating on and sharing your web development ideas.

dabblet is an interactive playground for quickly testing snippets of CSS and HTML code. It uses -prefix-free, so that you won't have to add any prefixes in your CSS code. You can save your work in Github gists, embed it in other websites and share it with others.



Flems is a playground for web development. It's ideal for prototyping ideas & sharing working front-end code examples.


kodeWeave is a realtime coding playground for HTML, CSS and Javascript. Similar to JSFiddle and JSBin, but kodeWeave was made to work offline but also as a prototyping application to build applications for desktop operating systems while on mobile devices.





Fastpen is an open source alternative to codepen that just stores the source code compressed, in the url.






Doesn't support preprocessors nor libraries


Playcode is an AI website builder and AI app builder for creating, editing, and publishing live web projects. Describe the website, landing page, internal tool, or app you need in plain language, refine the result with AI chat and visual editing, and publish with hosting, SSL...




Codeply is a editor that lets you run and preview your HTML, CSS and JavaScript code from any modern Web-browser. You've seen this capability in other tools like JSFiddle, Codepen and Bootply. But, Codeply is different because it's not just a code editor.



Codiad is an open source, web-based, cloud IDE and code editor with minimal footprint and requirements

snippet.host is a minimal text and code snippet hosting. With memorable domain name, it is free, lightweight, with no ads or cookies. Features include syntax highlighting in multiple languages, easy-to-use API and Tor hidden service support.




It's purdy and doesn't have a lot of the fluff that CodePen does. Changes take place much faster here.