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CodePen 2.0 launched with major updates including real-time collaboration, npm package support, file management, and deployment features, as detailed by co-founder Chris Coyier.
A free, no-signup Mermaid diagram editor with live preview, instant SVG/PNG export, and shareable links that run entirely in the browser. Optionally connects to GitHub to auto-generate architecture diagrams from source code.
Claude Code Artifacts allows users to preview and share their coding work live as it happens.
Atomic Editor brings Obsidian-style live preview to CodeMirror 6, enabling a rich WYSIWYG editing experience for developers.