Display a view in a modefull popup.

I want to display a new view in a popup superposing the current view.

It should be "modefull";, i.e. blocking; The user has to close the popup before proceeding.

For example a "yes/no" dialog or a modal to temporary show more information.

Such popup is also often called overlay, modal, alert, dialog, or lightbox.

What are the React modefull overlay libraries out there?