CodePen

CodePen is an online code editor and social development environment for front-end designers and developers. It allows users to create and share code snippets, known as "pens," in HTML, CSS, and JavaScript. CodePen provides a live preview of code changes, enabling real-time experimentation and collaboration. The platform features a community-driven approach, with users sharing their work and learning from others. CodePen also supports the integration of various frameworks and libraries, making it a versatile tool for prototyping and showcasing web design and development projects.