Platforms
- Online
United States

Sites and apps similar to CodePen include Replit, which has a free version. Other options are jsFiddle, Firebase Studio, Qoder IDE and JSPad. You're spoiled for choice with Code Editors like CodePen: we list more than 50 alternatives for self-hosting, Mac, Windows, Linux and Android.

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.




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


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






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

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.

Web Maker is an easy, quick and offline web experiment playground available as a Chrome extension, with open source code available at GitHub.




Storm is an online web development environment which allows users to run HTML, CSS, Javascript code in real time in a secured environment. It supports sharing Scribble (Storm project) via a dedicated link and also allows users to use jQuery and React framework of JavaScript.
