Cost / License
- Paid
- Proprietary
Application types
Platforms
- Online
- Software as a Service (SaaS)



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 Self-Hosted, Linux, Mac and Windows apps. The best CodePen alternative is jsFiddle, which is free. Other great sites and apps similar to CodePen are Replit, Firebase Studio, Qoder IDE and CodeSandbox.



A full-fledged, embeddable, online editor for private, offline web projects. Integrates with Github, and is also mobile friendly!.


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.

shelf.gg is an open source pastebin that makes it easy to find and share lists of resources.

BoxCoding is a website for frontend developers featuring hundreds of community-made CSS and HTML UI elements. All elements are open source and free to use. Explore Elements and Free Source Code in HTML, CSS and JavaScript that can be used in your next project.





Trae Plugin is an AI-powered cloud-based IDE (Integrated Development Environment). The built-in AI Assistant and the out-of-the-box development environment let you focus more on the development of various projects.

Atheos is a web-based IDE framework with a small footprint and minimal requirements, built on top of Codiad by FluidByte and the Codiad Team.


Simple Code Editor for playing with Javascript and Conducting Interviews. New alternative for JSBin and JSFiddle.

TIO is a family of online interpreters for an evergrowing list of practical and recreational programming languages.
CodeJS is a powerful, free online code editor that serves as an excellent alternative to JSBin, CodePen, and JSFiddle. What sets it apart is its unique integration of three AI assistants.


