Two different bets
PrimeReact is one of the broadest React component suites available — 90-plus MIT-licensed components, including a feature-rich data table, a full set of form controls, overlays, menus, and charts built on Chart.js. It's part of the wider PrimeTek family (PrimeNG for Angular, PrimeVue for Vue, PrimeFaces for Java), so its component vocabulary is consistent across stacks and battle-tested at enterprise scale. The library is free; the business model is premium themes, application templates and PrimeBlocks.
Its styling story is unusually flexible. PrimeReact offers a styled mode with ready-made themes, an unstyled mode, and a PassThrough (`pt`) system that lets you target any internal DOM element of any component to inject classes or attributes — including first-class Tailwind integration. That gives enormous reach: you can take the defaults, restyle granularly per element, or go fully unstyled and bring your own design.
Vireya makes a narrower, more opinionated bet. It's a focused, token-driven system: static CSS Modules where every value is a `--v-*` token, a `createTheme()` engine with tier-based palettes and light/dark, and pre-composed blocks plus a charts library that all share that one token vocabulary. It's also built for hybrid delivery — the same web UI ships as a native mobile app through a WebView shell and a typed bridge. It trades PrimeReact's sheer breadth for a single, consistent styling model and free bundled blocks.
These aren't the same kind of product. PrimeReact is a mature, sprawling suite optimised for breadth and per-element customisation; Vireya is an early (v0.1.0), tightly integrated system optimised for token consistency and composition. If component count and a ready data table decide it today, PrimeReact is ahead; if you want one styling model across components, blocks and charts — and a path to ship the same UI to mobile — Vireya is the more cohesive choice.
Under the hood
Styling: styled/unstyled + PassThrough vs tokenized CSS Modules
PrimeReact lets you choose how much styling to accept. Styled mode applies a theme; unstyled mode strips the defaults; and the PassThrough (`pt`) API exposes every internal DOM node of a component so you can attach classes or attributes precisely where you want — commonly Tailwind utilities. It's powerful, but a heavily customised app ends up describing appearance through a mix of theme presets plus per-element PassThrough overrides scattered across usages.
Vireya has one styling model: static CSS Modules whose every value is a `--v-*` token, with no runtime CSS-in-JS. Re-theming is changing token values once via `createTheme()`, after which components, blocks and charts all follow. You give up PassThrough's per-element reach in exchange for a single, predictable token layer.
Charts and data: Chart.js + a data table vs a tokenized charts library
PrimeReact bundles charts as wrappers around Chart.js, and ships a mature, feature-dense DataTable — sorting, filtering, paging, virtual scroll, row grouping and more — which is one of the suite's headline strengths. That breadth is a real advantage when you need heavy data UI now.
Vireya bundles its own charts library that draws from the same `--v-*` tokens as the components, so visualisations match the rest of the UI without a separate styling story. It's narrower than PrimeReact's data tooling today; if a full-featured data table is decisive, PrimeReact is the stronger fit at this stage.
Scope and licensing: a broad free suite with paid blocks vs free bundled blocks
PrimeReact's 90-plus components are MIT and free — there's no feature paywall — but the polished, ready-to-paste compositions (PrimeBlocks) and full application templates are commercial products. Page-level building blocks are an add-on you buy.
Vireya bundles pre-composed blocks for free, sharing the components' tokens, so landing-page and app-shell compositions come in the box rather than as a paid layer. The trade is breadth: Vireya's component set is focused and growing, not 90-plus deep.
Reaching mobile: web-only vs hybrid delivery
PrimeReact is a web suite. There's no native delivery path that comes with it — reaching iOS and Android means a separate React Native build (PrimeReact has no RN counterpart in the PrimeTek family) or wrapping the web app yourself, and your DataTable and Chart.js views don't follow to a native shell on their own.
Hybrid delivery is the bet Vireya is built around. You build the UI once as a web app and run it inside a native WebView shell, with a typed RPC bridge (`@vireya/rpc`) wiring the native functions you actually need — payments, sensors, push — while screens render from the web. It's the Mobile Bridge pattern Shopify documented and that commerce apps like Mercado Livre and Magazine Luiza use to ship at scale, so you reach mobile without rebuilding the suite in React Native. The bridge is still maturing (Expo first via `@vireya/platform-expo`), so treat it as the model Vireya is designed for rather than a turnkey feature today.
Side by side
| Vireya | PrimeReact | |
|---|---|---|
| Distribution | Versioned npm package (@vireya/*) | Versioned npm package (primereact) |
| Styling | CSS Modules + --v-* tokens, no runtime CSS | Styled/unstyled + PassThrough; Tailwind preset |
| Theming | Token engine, tier-based palette, light/dark | Theme presets + design tokens, runtime engine |
| Charts & blocks | Bundled & free, same tokens | Chart.js charts bundled; PrimeBlocks commercial |
| Data table | Focused, growing | Mature, feature-dense DataTable |
| Native mobile | Hybrid: web UI in a native WebView + typed bridge | Web only (separate RN effort) |
| Accessibility | Built on Radix + base-ui | Self-implemented, stated WCAG focus |
| Breadth | Focused, growing | 90+ components |
| Maturity | Early (v0.1.0), actively built | Mature, large cross-framework ecosystem |
Where PrimeReact shines
- Sheer breadth — 90-plus components in one package, including a mature, feature-dense DataTable and Chart.js-based charts that cover most application UI out of the box.
- A flexible styling model: styled and unstyled modes plus a PassThrough system that reaches every internal element, with first-class Tailwind integration.
- MIT-licensed with no feature paywall — only premium themes, templates and PrimeBlocks are commercial.
- A consistent cross-framework ecosystem (PrimeNG, PrimeVue, PrimeFaces) and a stated WCAG accessibility focus, backed by long production maturity.
What Vireya does differently
- One `--v-*` token engine drives components, blocks and charts together, instead of theme presets layered with per-element PassThrough overrides.
- Pre-composed blocks are bundled and free; PrimeReact's PrimeBlocks and application templates are commercial add-ons.
- It's built for hybrid delivery — the same web UI ships as a native mobile app through a WebView shell and a typed bridge — whereas PrimeReact stops at the web.
- Accessibility is built on Radix and base-ui primitives rather than self-implemented per component.
When to choose PrimeReact
- You want maximum component breadth in one package, including a full-featured data table and charts, right now.
- You value the styled/unstyled flexibility and the per-element reach of the PassThrough system, especially with Tailwind.
- You're standardising UI across multiple framework stacks and want a consistent vocabulary (PrimeNG, PrimeVue, PrimeFaces).
- You're happy to buy ready-made PrimeBlocks or application templates to accelerate page composition.
When to choose Vireya
- You want a focused, consistent token-driven system rather than a very broad suite to tame.
- You want pre-composed blocks bundled for free and sharing the components' tokens.
- You want a path to ship the same web UI to mobile as a hybrid native + WebView app, not a separate React Native rebuild.
- You prefer a single styling model — one `--v-*` token layer — over theme presets plus per-element overrides.
Switching from PrimeReact to Vireya
Moving from PrimeReact to Vireya is a swap of a broad, per-element-customised suite for a focused, token-driven one, and the honest first step is a scope check: if you lean heavily on PrimeReact's DataTable or its Chart.js charts, confirm Vireya's components and charts cover what you need before committing, since PrimeReact is broader today. The interaction model of common components carries over, but PrimeReact's PassThrough overrides don't translate directly.
The styling change is the substantive one. Instead of theme presets plus `pt` overrides scattered across usages, you map your palette, spacing and radius onto `--v-*` tokens once via `createTheme()` and let components, blocks and charts inherit them — and you drop any Tailwind-via-PassThrough wiring, since Vireya has no Tailwind dependency. Teams typically migrate screen by screen, replacing PrimeReact components and paid PrimeBlocks with Vireya's free bundled blocks as equivalents land.
The bottom line
PrimeReact and Vireya sit at opposite ends of the breadth-versus-cohesion spectrum. PrimeReact is a mature, sprawling MIT suite — 90-plus components, a serious data table, Chart.js charts, and a PassThrough system that lets you restyle any element — and if breadth and a ready data table decide it, it's clearly ahead today, with paid blocks and templates if you want them. Vireya is a younger, tighter system that drives components, free bundled blocks and charts from one `--v-*` token layer, and is built to ship that same UI to mobile as a hybrid native + WebView app. Choose PrimeReact for reach and per-element control; choose Vireya for one consistent styling model, bundled composition and a hybrid mobile path, accepting a narrower, earlier component set.
Still deciding? Read why teams choose Vireya, see how theming works, or browse the live blocks and charts showcases. You can also see other comparisons, browse UI library alternatives and the best library by use case, or read about PrimeReact directly.
Frequently asked questions
Is Vireya a PrimeReact alternative?
Yes, for teams who want a focused, token-driven system with free bundled blocks and a hybrid mobile path, rather than a very broad suite where the polished blocks and application templates are commercial add-ons. PrimeReact remains broader in raw component count.
Are Vireya's blocks free like PrimeReact's components?
PrimeReact's 90-plus components are MIT and free, but its PrimeBlocks and application templates are commercial. Vireya bundles pre-composed blocks for free, sharing the same --v-* tokens as the components, so page-level compositions come in the box rather than as a paid layer.
Does Vireya have a data table and charts like PrimeReact?
Vireya bundles a tokenized charts library that shares the components' tokens. PrimeReact is broader today — its 90-plus components include a mature, feature-dense DataTable and Chart.js charts. If you need that full data-UI breadth now, PrimeReact is the stronger fit.
How does Vireya's theming compare to PrimeReact's PassThrough?
PrimeReact's PassThrough lets you target any internal element of a component to inject classes or attributes, often Tailwind utilities — powerful but spread across usages. Vireya uses one --v-* token layer: you change token values once via createTheme() and components, blocks and charts all follow, with no Tailwind dependency.
Can Vireya ship a mobile app where PrimeReact can't?
PrimeReact is web-only — reaching mobile means a separate React Native build or your own wrapper. Vireya is built for hybrid delivery: the same web UI runs inside a native WebView shell with a typed bridge (@vireya/rpc) for native functions — the Mobile Bridge pattern Shopify documented and apps like Mercado Livre and Magazine Luiza use — so you reach mobile without rebuilding the suite. The bridge is maturing, Expo first.
Which should I choose?
Choose PrimeReact if you want maximum breadth in one package, a ready data table and charts, and per-element styling control through PassThrough. Choose Vireya if you want a focused, consistent token-driven system with free bundled blocks and charts under one token layer, plus a path to ship the same UI as a hybrid mobile app.