Ember Primitives

Ember Primitives is a comprehensive collection of unstyled, accessible, and highly composable UI building blocks designed to accelerate the development of Ember.js applications. It provides low-level components and utilities that developers can style to match any design system, focusing on headless functionality for maximum flexibility. The library is actively maintained, with frequent patch and minor releases, as evidenced by version `0.55.2` released in April 2026 and numerous updates in the preceding months. Key differentiators include its deep integration with the Ember ecosystem, full TypeScript support via Glint, and a focus on providing foundational UI elements like switches, drawers, and ratings that are challenging to build from scratch with proper accessibility and behavior. It explicitly aims to work with various CSS frameworks like Open Props, Tailwind, and Bootstrap, and is compatible with modern Ember setups, including Embroider.