# Radix UI

> Core building blocks for your design system

- **Canonical URI:** https://www.vioscale.ai/software/radix-ui
- **Category:** Frontend UI Frameworks
- **Homepage:** https://www.radix-ui.com/primitives
- **Also known as:** radix-ui
- **Profile claimed by vendor:** no
- **Last updated:** 2026-08-03T21:00:17.217Z

## Vioscale score

**58 / 100**, confidence 15% (low).

Composite of weighted, independently-sourced signals (no user reviews, no vendor payment).

| Signal | Score | Weight | Contribution | Evidence present |
|---|--:|--:|--:|:--:|
| capabilities | 45.8 | 16 | 733.1 | ✓ |
| github_stars | 80.8 | 5 | 403.8 | ✓ |
| integrations | 0 | 8 | 0 | - |
| github_activity | 62.4 | 18 | 1123.3 | ✓ |
| release_cadence | 0 | 10 | 0 | - |
| security_posture | 0 | 13 | 0 | - |
| package_downloads | 0 | 26 | 0 | - |
| stackoverflow_activity | 0 | 12 | 0 | - |

## Pricing

_As of 2026-08-03, [verify at source](https://www.radix-ui.com/primitives). Independently observed._

Open source · Free tier

## About

Unstyled, accessible, open source React primitives for high-quality web apps and design systems.

_Independently observed._

## Platform & deployment

- **Platforms:** Web

## Capabilities

_The capabilities that matter for Frontend UI Frameworks. "-" = undocumented, not absent._

| Capability | Supported |
|---|:--:|
| **Core** | |
| Paradigm | React primitives |
| **Rendering** | |
| Virtual DOM | ✓ |
| Signals / fine-grained reactivity | - |
| SSR support | - |
| **DX** | |
| First-class TypeScript | - |
| **Core** | |
| Reusable component model | ✓ |
| **State** | |
| Built-in state management | - |
| **Ecosystem** | |
| Official router | - |
| **Performance** | |
| Runtime size | - |

## Facts

Every value below carries its source and our confidence. Facts are re-crawled on a freshness schedule.

### activity

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| activity.commits_last_30d | 95 | [link](https://github.com/radix-ui/primitives/pulse) | 2026-08-03 | 65% (medium) |

### adoption

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| adoption.github_stars | 19,123 | [link](https://github.com/radix-ui/primitives) | 2026-08-03 | 90% (high) |

### language

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| language.primary | TypeScript | [link](https://github.com/radix-ui/primitives) | 2026-08-03 | 90% (high) |

### license

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| license.spdx | MIT | [link](https://github.com/radix-ui/primitives) | 2026-08-03 | 95% (high) |

### pricing

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| pricing.free_tier | yes | [link](https://www.radix-ui.com/primitives) | 2026-08-03 | 60% (medium) |
| pricing.model | open_source | [link](https://www.radix-ui.com/primitives) | 2026-08-03 | 60% (medium) |
| pricing.price_level | free | [link](https://www.radix-ui.com/primitives) | 2026-08-03 | 60% (medium) |
| pricing.transparent | yes | [link](https://www.radix-ui.com/primitives) | 2026-08-03 | 60% (medium) |

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*Source: Vioscale (https://www.vioscale.ai/software/radix-ui). Independent, evidence-based software intelligence. Cite the canonical URI.*