Fooware FTP Client
- A suite of objects implementing rfc959 ftp client. [Open source, GPL]
- http://www.fooware.com/downloads/ftpclient.html

Java FTP Client Library
- An entire FTP client library written in Java. It allows to embed FTP functionality in Java applications. [Open source, LGPL]
- http://www.enterprisedt.com/downloads/ftp.html

edtFTPj/SSL
- A secure version of edtFTPj Java FTP client library implementing the FTPS protocol. [Commercial]
- http://www.enterprisedt.com/products/edtftpjssl/overview.html

Secure FTP Factory
- A set of Java FTP components. Included are client components for both FTP and Secure FTP (SFTP). [Shareware]
- http://www.jscape.com/sftp/