Claude Code skill — generate cross-client HTML email with MJML. Outlook-safe, Gmail-optimized, WCAG 2.1 AA accessible.

Cross-platform UI/UX design reviewer based on Apple HIG. Works with Flutter, Tauri, Electron, React Native. Compatible with Claude Code, Cursor, Codex.

PyWry is a cross-platform app factory, rendering engine and UI toolkit for Python that produces native desktop, web, and notebook experiences from a single API.

AI-powered E2E testing for 10 platforms. 253 MCP tools. Zero config. Works with Claude, Cursor, Windsurf, Copilot. Test Flutter, React Native, iOS, Android, Web, Electron, Tauri, KMP, .NET MAUI — all from natural language.

Playwright MCP server

An agent skill for building premium, immersive, scroll-driven websites. Works with Codex, Claude Code, and other coding agents. Also available as a Claude Code plugin.

Scroll Video Website is a portable AI-agent skill that turns videos into smooth, scroll-controlled canvas experiences with optimized WebP frames, progressive loading, and responsive animation.

Web Design Studio: free agent skill for distinctive websites, interactive 3D and motion. 28 live examples, art direction and accessible fallbacks. Formerly Cinematic Scroll.