Open source. Open possibilities.

Ayoni is an open-source web analytics tool designed for modern websites, offering real-time tracking and a clean dashboard for monitoring site traffic.

RetroUI is a retro-styled Tailwind CSS component library that provides NeoBrutalism-inspired UI elements for building bold, modern web applications.

Better Design is an open-source MCP server and shadcn/ui registry that supplies AI coding agents with design systems, semantic CSS tokens, component overrides, UI principles, icon matching, and WCAG-oriented review rules. It includes 31 themes and connects to Claude Code, Cursor, VS Code/GitHub Copilot, Claude Desktop, and other MCP clients.

shadcn/ui is an open-source collection of customizable, accessible UI components distributed through a code distribution platform, intended as a starting point for building your own component library and compatible with popular frameworks.

coss.com/ui is the official design system of Cal.com — a TypeScript monorepo of React components built on Base UI and styled with Tailwind CSS, intended to be copied, pasted and owned, alongside the docs site and a legacy Origin UI snapshot.

UI Layouts is an open-source component library for building modern, creative web interfaces, offering ready-to-use blocks and effect components alongside setup notes for Tailwind CSS, Motion, clsx and tailwind-merge.

Franken UI (franken-ui/ui) is described as an HTML-first UI component library built on UIkit 3, extended with LitElement and inspired by shadcn/ui. Its README now only announces a move to 0build, so documentation lives elsewhere.