Headless UI libraries provide fully accessible, unstyled components that give developers control over styling.
Traditional UI libraries, such as Material-UI and Vuetify, offer ready-to-use components with specific design principles.
The shift towards headless UI libraries is driven by the complexity of theming traditional libraries, integrating custom components, bundle size concerns, and potential performance side effects.
Choosing between headless and traditional UI libraries depends on the project's requirements; headless libraries are suitable for highly customized design systems, while traditional libraries are convenient for rapid development and polished pre-designed components.