Anonymous login

You usually log onto an FTP server by entering a user name and password. However, many sites offer a guest login option. Key in anonymous as your user name and your e-mail address as a password.

FTP servers that support anonymous login usually allow users to download files to which there are no public access restrictions; e. g., shareware programs, image collections, help texts, etc.

Note that there is a special etiquette for public servers:  

Another characteristic of such (public) servers is that although users may view and download files, they may not upload any files.