FTP

Programs to connect to and download from FTP servers.

FileZilla

FileZilla is a free, Open Source FTP client for Windows. It supports proxy servers, PASV mode FTP, and SecureFTP.

Transmit for Mac OS X

An excellent FTP client for Mac OS X. Transmit is shareware and has a trial period. You must purchase it from Panic if you want to continue using it after the trial period

Transmit for MacOS 9

An excellent FTP client for Mac OS 9. Transmit is freeware. It is no longer supported by Panic.