JS Bin is a live pastebin for HTML, CSS & JavaScript and a range of processors, including SCSS, CoffeeScript, Jade and more. Developed by Remy Sharp
License: Freemium
JS Bin is a simpler tool ideal for quick prototyping and sharing code snippets, whereas CodePen offers a more feature-rich environment with strong community support, collaboration tools, and a variety of templates. While both platforms support live previews and code storage, CodePen excels in user engagement and project management.