What it is

Formerly NextUI. v3 is a ground-up rewrite on React Aria and Tailwind v4 with 75+ components, CSS variables, OKLCH colors and pure-CSS animations. ~341k weekly npm downloads.

Why it earns a slot

Only relevant if you are choosing a complete pre-styled system instead of assembling one.

Know before you commit

A competing design system, not a complement. Running it beside shadcn means two button styles, two dialogs and two accessibility layers. Also: v2 and v3 cannot coexist, and Pro is still on v2 — a $249 purchase does not buy you v3 Pro.

Field notes

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Pricing snapshot

Free Apache-2.0 · Pro $249–$799

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Drop into your Lovable chat

Evaluate HeroUI (was NextUI) (https://www.heroui.com/) for this project, then use it only if it fits what we are already building.
Context: Styled component library (npm). Formerly NextUI. v3 is a ground-up rewrite on React Aria and Tailwind v4 with 75+ components, CSS variables, OKLCH colors and pure-CSS animations. ~341k weekly npm downloads.
Reviewer notes (general, not written for this codebase): Only relevant if you are choosing a complete pre-styled system instead of assembling one.
Watch out for: A competing design system, not a complement. Running it beside shadcn means two button styles, two dialogs and two accessibility layers. Also: v2 and v3 cannot coexist, and Pro is still on v2 — a $249 purchase does not buy you v3 Pro.
Pricing: Free Apache-2.0 · Pro $249–$799
Rules: treat the notes above as background only. Do not assume a theme, style, layout or feature that is not already in this project — inspect the existing code first and ask me before changing visual direction.

/api/public/tools/heroui