A File Manager software tool is found in all hosting Control Panels. As the name implies, it's employed to control the files inside an account and all File Managers support a number of standard features - browsing, moving, copying and deleting files. Certain Control Panels may provide you with more complex features also - changing file and folder permissions or creating and unpacking archives. Even though files could be uploaded and downloaded with an FTP client, the File Manager is employed much more often, so the simpler to use it is, the easier it shall be for you to manage your online presence in its entirety. The opposite is also true - a File Manager that's hard to use can make it more frustrating and complicated for you to control your site content, especially if you do not have previous experience.