React is free to use and helps developers to build the user interface and its components. Facebook is the primary maintainer for react with some other individual developers and companies. React is generally used in single page and mobile application development.

What is react?
Released by Facebook in 2013, React is a JavaScript library for modern apps and web development. React is used to handle the view layer and can be used to develop both web and mobile applications. In addition, there is a mobile-specific react framework for mobile app development named 'React Native.'
React empowers developers to build large web applications that can modify data, without reloading the web page. The main objective of React is to be fast, scalable, and simple to work with. React works only on UI or UX in the application. This epistolizes to view in the MVC template. It can be used with a combination of other JavaScript libraries or frameworks, such as AngularJS in MVC.

What is React used for?

React is mostly used for developing single-page web applications and Front-end work. React can efficiently build beautiful UI components and integrate them into an Interactive and engaging Single-Page application. Another use of reactjs is in front-end development, react provides some advantages that make front-end work easier and faster. Besides these react is being used in native mobile apps for android and iOS with react powered framework named React Native.

React 18
We are currently using React 17.0.2, and React 18 is just a few months away; until then, developers provided alpha builds of React 18 for testing and feedback. With React 18 alpha, we can react to 18's upcoming features that we will talk about later in this article.

Every ReactJS user was waiting for something big in the form of an update, and then they just announced ReactJS 18. From React 17, ReactJS Developers kept us in wait and suspense, but now we all know that we will get what we have been waiting for. Still, there might be more stable builds of ReactJS 18, but we will talk about everything that we know so far.

Features Coming With React 18
Even Alpha Builds includes many changes and new features; then, stable builds will be unique. Here are the features that we have in the latest alpha build of React 18 -

Automatic Batching
Concurrent Rendering
startTransition

Server-Side Rendering with selective Hydration
useDeferredValue
Root API
Strict Effect Mode

React 18 will be a vast improvement, and we are all going to leverage its advanced features. Developers are halfway through the development yet, still impressed users with these fantastic features. You can try Alpha ReactJS 18 from their website or wait for 3 to 5 months for a richer stable build.