When comparing Codepen vs Browxy, the Slant community recommends Browxy for most people. In the question“What are the best cloud IDEs?” Browxy is ranked 6th while Codepen is ranked 17th.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Easily export your pen
CodePen makes it really easy to export code as a zip or Github Gist.
Pro Real time output
Pro Lots of support for frameworks and preprocessors
CodePen has an impressive amount of support for preprocessors (such as Jade, Haml, Slim, Sass, Less, Stylus, Coffeescript and PostCSS). There is also plenty of frameworks and libraries to pick from (Foundation, Bootstrap, Angular, D3, Backbone, Ember etc.).
Pro Great display/profile page
The codepen profile page allows you to display all of your public pens, and control which order you want them to be viewed in. This is great for showing off your work to possible employers, other devs etc..
Pro Easily fork pens
To fork a pen only requires clicking one button, and you'll be able to modify the pen on your own account.
Pro Great community pens
You can search through other pens, either by keyword or popular, picked or recent.
Pro Create a simple Java project in one click
Pro The new beta version has a forum to ask for coding help
The new beta version supports a full forum backed up with PHPBB to ask for help in any of the supported languages.
Pro The new beta version supports a full filetree to add/create and delete files
Pro Publish your project to a public URL
Pro Add, create and delete your projects
Pro Flowcharts
Create code from a flowchart and a flowchart from code.
Pro Integrated dbugger
Integrated debugger for Java & Javascript.
Pro No login required to run programs
Pro Run interactive programs and applets
Pro The new beta version supports more languages
It supports C, C++, Java, Php, Python and C#.
Cons
Con No private pens with free account
There is an option on Codepen for private pens, however it requires upgrading to a Pro account ($9/month).