CodePen - A front end web development playground.
Screenable - Screenable is the video interview platform designed to streamline applicant screenings and make the recruitment journey more efficient and effective.
JSFiddle - Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle code editor.
HireFunnel - Automated Video Interviewing Platform
JS Bin - Sample of the bin:
Coding View - Coding View is live collaborative coding environmentdesigned for technical phone interviews. It features web version of Visual Studio Code, as well as access to real terminal. It has a built-in compiler for most popular programming languages.