In computing, a folder, also known as a directory, is a file system cataloging structure which contains references to other computer files, and possibly other directories. Folders are used to organize and store files and documents in a hierarchical system, making it easier to manage and navigate the data stored on a computer or network. They can contain any type of file, and can also contain other folders, allowing for the creation of a nested organizational structure. Folders are a fundamental aspect of file management in operating systems, providing a user-friendly way to organize and access various files and documents.