No license cost: React is free; budget instead for the meta-framework and hosting you pair it with.
About
In practice. What you can do with React.
React is a component-based JavaScript library for building user interfaces, using a declarative model and virtual DOM diffing for efficient updates. It is backed by an ecosystem of official tooling and community frameworks such as Next.js and Remix for routing, data fetching and server rendering, and extends to native mobile apps through React Native.
React itself is free and MIT-licensed, with no plans or pricing: the cost is the engineering time to build around it. In February 2026 Meta transferred its governance to the independent React Foundation, hosted by the Linux Foundation. It suits developers who want a widely adopted, well-documented component model, provided they pair it with a router, state management and a meta-framework for production use.
Practical uses
Solo developerBuild a client's marketing site or dashboard UI with React plus a meta-framework like Next.js for routing and server rendering.
Small teamShare one component library across a web app and a React Native mobile app to avoid building the UI twice.
Features & use cases
Frontend framework
UI components
Pros and cons. What React does well, and what to expect.
Pros
Free and open source with no licensing cost, now under independent Foundation governance rather than a single company.
Large hiring pool and ecosystem of meta-frameworks and libraries covering routing, data fetching and mobile.
Cons
Not a full framework on its own: routing, state management and data fetching require separate third-party choices.
Production apps typically need a meta-framework layer like Next.js for build tooling, adding a second dependency to track.
When it makes sense. Keep React, or challenge it?
Keep if
You want a widely adopted, free component library with deep ecosystem and hiring support for a web or mobile UI.
Challenge if
You want a batteries-included framework out of the box without choosing a router and meta-framework separately.
Our verdict. What to know about React.
Why this verdict
Great
Added value
Free, open-source and MIT-licensed, with a deep hiring pool and ecosystem of frameworks, so adopting it costs nothing beyond engineering time.
Simplicity
Being only a view library, a first working app requires choosing and wiring a router, state management and a meta-framework, which takes more than an hour for a newcomer.
Fit for purpose
Delivers on its promise as a UI-building library, extended to mobile via React Native and server rendering via community frameworks, without hidden workarounds.
Performance
Reference-level ecosystem depth: official tooling plus community frameworks (Next.js, Remix) and React Native cover web, server rendering and mobile from the same component model.
Reversibility
MIT-licensed open source with no vendor lock-in on the code itself; components can be ported to another React-compatible runtime or rewritten incrementally.
