FullCalendar is a JavaScript tool for creating customizable, draggable event calendars for modern web apps. It uses Fiber, React's efficient rendering engine, to create true React virtual DOM nodes. With over 300 parameters and more being added with every version, FullCalendar can accomplish just about anything. The React JavaScript framework is perfectly integrated with FullCalendar. It provides a component that is identical to FullCalendar's standard API in terms of functionality. This isn't just another "connection." It instructs the main FullCalendar package to start rendering with React virtual DOM nodes instead of the Preact nodes it normally employs, therefore turning FullCalendar into a "true" React component. You can construct any callback directly on the object and have it trigger Outsystems events, choose from a variety of views, manage events with certain built-in methods (although you can write your own), and modify the component using advanced options. You can also pass recurring events, unique events,