Sites and apps similar to Codeply include Replit, which has a free version. Other options are Pastebin.com, CodePen, jsFiddle and JSPad. Code Editors like Codeply are a crowded field, with more than 25 alternatives for Windows, Linux, Mac, Android and iPhone.
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.
Greece
EU
Codewith.it is an online HTML, CSS and JavaScript code playground with realtime preview with many tools for developing web pages and advanced code analysis systems, with many assistance tools.
JSitor is an online tool for testing and showcasing user-created and collaboration HTML, CSS, JavaScript and NodeJS snippets.
India
Plunker is an online community for creating, collaborating on and sharing your web development ideas.
Fastpen is an open source alternative to codepen that just stores the source code compressed, in the url.
United States
Compile and Execute your favorite programming languages online, click any of the following to proceed! Web Technologies, Text Formatting, Useful Utilities, Programming Languages. Vim, emacs modes are avaliable.
United Kingdom
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.
United States
Pinocode is an Offline code playground for frontend development right in your browser. It provides you a cool environment to practice frontend development using HTML, CSS and JavaScript. With support for variants and external libraries inclusion.
