Of course, you have to obtain the permission of the owner of the remote computer in order to gain access but usually this isn't a problem. Telnet is your gateway to all these useful features. FTP is similar in some ways to Telnet, in that it allows you to connect to a remote computer, but it differs in that FTP sessions are limited to sending and receiving programs and data files. For this reason, there are many sites that allow FTP access even if they don't offer Telnet access. File upload and download sections.
Files are available via anonymous ftp and anonymous uucp.
Archie - Direct access to an archie server for software index retrieval is available. Archie contains archive indexes for most anonymous ftp sites on the Internet. Chatting - Two interactive discussion programs exist. Both provide interactive, real-time access to people around the globe. IRC includes some channels for discussions in various languages.