{"name":"Radix UI","tagline":"Low-level, accessible UI primitives for React.","url":"https://radix-ui.com/primitives","category":"design","pricing":"free","price_note":"MIT open source","free_tier":true,"open_source":true,"api":false,"self_host":false,"verdict":"ship","verdict_text":"The foundation most modern React component libraries are built on. Primitives are accessible, unstyled, and behave correctly across browsers.","limitations":["You must style everything yourself.","Not a drop-in component library for non-technical users.","Some primitives have a learning curve."],"strengths":["Accessible, unstyled React primitives that behave across browsers.","The foundation most modern React kits — including shadcn — sit on."],"use_for":["Building a design system on correct behavior, then styling it yourself.","Teams that want a11y baked into the primitive, not bolted on."],"skip_when":["You need a drop-in styled library for non-engineers.","Styling everything from scratch is not in the budget.","The primitive API learning curve would stall the sprint."],"receipts":["https://radix-ui.com/primitives","https://github.com/radix-ui/primitives"],"affiliate":"none","evidence_tier":"source-verified","momentum":"steady","featured":false,"data_sensitivity":{"trains_on_inputs":"unknown","local_processing":true},"last_verified":"2026-09-01","observed_by":"whysanesanders","slug":"radix-ui","canonical_url":"https://noemium.com/tools/radix-ui/","attribution":"Noemium catalog data is licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). See https://noemium.com/method/ for how entries are verified."}