Comparison

Preact vs Radix UI

On the evidence we track, Preact leads this comparison with a composite score of 81/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Preact full profile →Radix UI full profile →

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★Preact81

Radix UI64

Attribute comparison across 2 tools
Attribute	PreactLeader	Radix UI
Vioscale score	81 / 100medium · 72%	64 / 100low · 34%
Pricing
Free tierpricing.free_tier	-	✓
Modelpricing.model	commercial	open_source
Price levelpricing.price_level	free	free
Transparentpricing.transparent	-	✓
Security
Scorecardsecurity.scorecard	5.7	4.2
Vulnerabilitiessecurity.vulnerabilities	Count: 2 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=preact&per_page=100 · Last 12m: 1 · Max severity: HIGH	Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=%40radix-ui%2Freact-slot&per_page=100 · Last 12m: 0
Adoption
Dependent reposadoption.dependent_repos	78,992	60,185
Github starsadoption.github_stars	38,834	19,211
Package downloads weeklyadoption.package_downloads_weekly	31,234,030	-
Activity
Commits last 30dactivity.commits_last_30d	100	95
Release
Cadence daysrelease.cadence_days	13	-
Historyrelease.history	20 items	-
License
Spdxlicense.spdx	MIT	MIT
Language
Primarylanguage.primary	JavaScript	TypeScript

Score

Vioscale score

Preact81 / 100medium · 72%

Radix UI64 / 100low · 34%

Pricing

Free tier

Preact–

Radix UI✓

Model

Preactcommercial

Radix UIopen_source

Price level

Preactfree

Radix UIfree

Transparent

Preact–

Radix UI✓

Security

Scorecard

Preact5.7

Radix UI4.2

Vulnerabilities

PreactCount: 2 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=preact&per_page=100 · Last 12m: 1 · Max severity: HIGH

Radix UICount: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=%40radix-ui%2Freact-slot&per_page=100 · Last 12m: 0

Adoption

Dependent repos

Preact78,992

Radix UI60,185

Github stars

Preact38,834

Radix UI19,211

Package downloads weekly

Preact31,234,030

Radix UI–

Activity

Commits last 30d

Preact100

Radix UI95

Release

Cadence days

Preact13

Radix UI–

History

Preact20 items

Radix UI–

License

Spdx

PreactMIT

Radix UIMIT

Language

Primary

PreactJavaScript

Radix UITypeScript

Capabilities

Feature-by-feature on the axes that matter for frontend ui frameworks. “-” means undocumented, not absent.

Capability comparison for Frontend UI Frameworks
Capability	Preact	Radix UI
Core
Paradigm	Virtual DOM component library	React component library
Reusable component model	✓	✓
Rendering
Virtual DOM	✓	✓
Signals / fine-grained reactivity	-	-
SSR support	✓	-
DX
First-class TypeScript	-	✓
State
Built-in state management	✓	-
Ecosystem
Official router	-	-
Performance
Runtime size	Tiny (<10kb)	Small (10–40kb)

Core

Paradigm

PreactVirtual DOM component library

Radix UIReact component library

Reusable component model

Preact✓

Radix UI✓

Rendering

Virtual DOM

Preact✓

Radix UI✓

Signals / fine-grained reactivity

Preact-

Radix UI-

SSR support

Preact✓

Radix UI-

First-class TypeScript

Preact-

Radix UI✓

State

Built-in state management

Preact✓

Radix UI-

Ecosystem

Official router

Preact-

Radix UI-

Performance

Runtime size

PreactTiny (<10kb)

Radix UISmall (10–40kb)

What each one is

The product in its own terms, so the numbers below have context.

Preact

Leader

A minimal virtual DOM library that provides a React-compatible API with significantly reduced file size. Preact delivers performance-focused component development without the overhead of traditional frameworks.

Independently observed

Radix UI

An open-source library providing minimal, keyboard-navigable React components with built-in screen reader support. Each component is intentionally left unstyled, allowing developers to apply custom styling while inheriting robust accessibility patterns and interaction handling.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Preact

Leader

Open source

as of 2026-08-13verify ↗

Radix UI

Open sourceFree tier

Free and open source (MIT license)

as of 2026-08-14verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platform and deployment support comparison
Supports	Preact	Radix UI
WebPlatforms	✓	✓

Platforms

Web

Preact✓

Radix UI✓

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.