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.
Its about quite a few things. You can use CSSDeck to make testcases and share with other people on IRC, forums, StackOverflow, etc. who help you solve your coding problems. You can even code with multiple people in realtime in various modes. Remember etherpad ?
A web-based IDE to teach programming in the classroom. Easily create and share exercises with students. Analyze and inspect students' submissions.
codi.link is a live editor for HTML, CSS and JS. It allows you to edit your code in real-time, and see the result instantly.
A collaborative online web development platform using HTML, CSS and JavaScript with a focus on design systems and financial applications.
Find, create, or share awesome apps that work right here in your browser. And for developers, join the #1 platform to build, distribute, and monetize web-based apps.
HashBin is a paste bin that never sees the contents of its pastes. It should be immune to takedown notices.
StaticSave is a simple website which mainly focus on hosting simple static codes of css, javascript, txt, json and xml. It can hosted in minutes without much worry and the process is simply quick with StaticSave.
PySketch is a Python web editor that aims to provide social coding experience to anyone who likes creative coding. You can improve or showcase your Python skills on the web by building fun projects, games, graphics with access to HTML5 and JavaScript libraries or exploring other...
Publish HTML quickly with open source web editor, HTMLhouse. Use the editor / real-time preview to build your HTML page, and press publish when you're done. That's it! No sign up, no fuss.
TIO is a family of online interpreters for an evergrowing list of practical and recreational programming languages.
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