Codeply is described as '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' and is an website in the development category. There are more than 25 alternatives to Codeply, not only websites but also apps for a variety of platforms, including Windows, Linux, Mac and Android apps. The best Codeply alternative is Pastebin.com, which is free. Other great sites and apps similar to Codeply are Replit, CodePen, jsFiddle and JSPad.