- An online community for testing and showcasing user-created HTML, CSS, and JavaScript code snippets. It functions as a code editor and learning environment, where developers can create code snippets (called pens), test, and share them. CodePen was founded in 2012. ← Wikipedia ↑ codepen.io
- Previous term: CODEOWNERS
- Next term: Coder
- Random term: Guidepup (webglossary.info/random 🎲)