1) browse directories & files on the server and
2)edit, copy, move, delete files,
3)search, upload and download files,
4)create and extract archives,
5)create new files and directories,
6)change file permissions (chmod) and much more...
You can even use eXtplorer to login to the FTP server (like net2ftp) and work as if you were using an FTP client. Access via WebDAV is also possible (requires some extra work and a database!).