React
Build interactive user interfaces for web and native platforms using reusable components
- Vendor
- Meta
- Also known as
- reactjs, react.js
Available worldwide · Popular in: US
What is React?
A library that enables developers to construct user interfaces using individual components as building blocks. React components are JavaScript functions that receive data and render the appropriate output, supporting both web applications and native mobile development through frameworks.
React pricing
We don't have React's full plan breakdown yet (its pricing page resisted automated reading). Here's what we could confirm. Always check live pricing for exact numbers.
What React does
The capabilities that matter for frontend ui frameworks, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.
- Paradigm
- Component-based library
- Reusable component model
- ✓
- Virtual DOM
- -
- Signals / fine-grained reactivity
- -
- SSR support
- ✓
- First-class TypeScript
- -
- Built-in state management
- -
- Official router
- ✗
- Runtime size
- -
Platform & deployment
Independently observed- iOS
- Web
- Android
Security & compliance
Known vulnerabilities: 0 (0 in the last 12 months) sourcea count reflects scale & disclosure, not quality
React FAQ
Common questions about React, answered from independent, dated evidence.
What is React?
React is a JavaScript library for building user interfaces using a component-based architecture. It uses a declarative programming model, allowing developers to describe what the UI should look like for any given application state. React employs a virtual DOM abstraction to efficiently update only the parts of the interface that have changed.
Is React open source and free to use?
Yes, React is open source software released under the MIT license, permitting free use, modification, and distribution in both commercial and personal projects. There are no licensing fees or cost barriers to using React.
Who maintains React?
React is maintained by Meta (formerly Facebook) along with contributions from the open-source community. Meta created React to solve its own internal UI challenges and later open-sourced it to enable broader adoption and community feedback.
What programming languages and platforms does React support?
React is built on JavaScript and TypeScript, running natively in web browsers. Meta also maintains React Native, a separate framework that allows developers to apply React principles to build native iOS and Android mobile applications using JavaScript.
What are the main alternatives to React?
Popular alternatives include Vue.js (a progressive JavaScript framework), Angular (a comprehensive full-featured framework), Svelte (a compiler-based framework), and Preact (a lightweight React-compatible library). Each offers different trade-offs in learning curve, ecosystem size, and performance characteristics.
How are React applications typically deployed?
React applications can use multiple rendering strategies: client-side rendering (browser handles all rendering), server-side rendering (server generates initial HTML via Node.js), or static site generation (pre-built HTML files). Deployments typically run on web servers, content delivery networks, or serverless computing platforms.
What build tools and libraries are commonly paired with React?
React projects typically use build tools such as Webpack, Vite, or Parcel for bundling and development. Common complementary libraries include React Router for navigation, Redux or Context API for state management, and Jest or React Testing Library for testing.
React alternatives
Other frontend ui frameworks we track, ranked by the same independent score.
- Vue.jsmedium · 71%
- PreactA minimalist UI framework that provides component-based development without the performance cost of larger alternatives.medium · 72%
- AngularA web framework for building performant, scalable applicationsmedium · 59%
- Vue.jsJavaScript framework for building interactive web interfaceshigh · 77%
- SvelteA compiler-based web framework for building responsive componentsmedium · 72%
- MUImedium · 72%
Compare React
Side by side against other frontend ui frameworks, attribute by attribute, with a source on every value.
The vioscaleAI score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for React, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Package downloads | 100 | 0.17 | 17.3 | ✓ |
| Developer Q&A activity | 100 | 0.08 | 8.0 | ✓ |
| Development activity | 56 | 0.12 | 6.7 | ✓ |
| Dependent projects | 69 | 0.08 | 5.5 | ✓ |
| Release cadence | 67 | 0.07 | 4.5 | ✓ |
| Capabilities | 46 | 0.08 | 3.8 | ✓ |
| Security score | 70 | 0.05 | 3.7 | ✓ |
| Stars | 100 | 0.03 | 3.3 | ✓ |
| Integrations | 0 | 0.05 | 0.0 | - |
| Security posture | 0 | 0.09 | 0.0 | - |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.
Activity
| Attribute | Value | Evidence |
|---|---|---|
| Commits last 30d | 58 | mediumsource · 2026-09-11 · 65% |
Adoption
Content
| Attribute | Value | Evidence |
|---|---|---|
| Faq | 7 items | highsource · 2026-07-30 · 94% |
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | Paradigm: Component-based library · Ssr support: Yes · Component model: Yes · Router official: No | mediumsource · 2026-09-14 · 60% |
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | JavaScript | highsource · 2026-09-11 · 90% |
License
| Attribute | Value | Evidence |
|---|---|---|
| Spdx | MIT | highsource · 2026-09-11 · 99% |
Market
| Attribute | Value | Evidence |
|---|---|---|
| Availability | Source: https://react.dev · HqCountry: US · Confidence: 0.95 · PrimaryMarkets: … · AvailabilityScope: global · AvailableCountries: … | highsource · 2026-07-30 · 95% |
Pricing
Release
Security
Is React the right choice for you?
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