Open-source component library for Phlex, modeled after shadcn/ui. Ships a catalog of reusable primitives (buttons with primary/secondary variants, select dropdowns, tables, etc.) that developers install by running a generator from the terminal — the CLI 'ejects' the component source from the gem into the host app so developers can maintain it locally, and installs any JavaScript dependencies needed. Built on Tailwind CSS (copies over the app CSS with the Tailwind configuration), Stimulus controllers for component behavior, and floating-ui for a couple of positioning-heavy components; accessibility support may bring in additional packages. Not tied to Active Support — works in Sinatra as well as Rails. In production at a handful of companies. Seth Horsley co-maintains it.