React-Bootstrap

React-Bootstrap is a front-end framework that is used in conjunction with React JS. It is a reimplementation of Bootstrap, a popular framework originally built by Twitter, to work seamlessly with React components. This means that every Bootstrap component is rebuilt to work with React and not relying on jQuery or Bootstrap's JavaScript, which is the case with the traditional Bootstrap library.

For example, if you'd like to use a Bootstrap button in your project using React-Bootstrap, you would use the following code snippet:

```
import React from 'react';
import Button from 'react-bootstrap/Button';

export class Example extends React.Component {
render() {
return (
<Button variant="primary">Primary</Button>
);
}
}
```

In this example, we're first importing the Button component from the "react-bootstrap" library. Then, inside the render method of our Example component, we include the Button component and pass a "variant" prop to it which corresponds to the type of button we want to display. Hence, this button will render with the primary variation based on the Bootstrap styling.

In addition to its out-of-the-box compatibility with React, another benefit of using React-Bootstrap is easy readability of the code due to its preferred JSX usage and the broad range of components this library provides.