gftp

gFTP is a free multithreaded ftp client for *NIX based machines running X11R6 or later. It has the following features:

Written in C and has a text interface and a GTK+ 1.2/2.0 interface
Supports the FTP, HTTP and SSH protocols
Supports FXP file transfers (transfering files between 2 remote servers via FTP)
Multithreaded to allow for simultaneous downloads
File transfer queues to allow for downloading multiple files
Supports downloading entire directories and subdirectories
Bookmarks menu to allow you to quickly connect to remote sites
Supports resuming interrupted file transfers
Supports caching of remote directory listings
Drag-N-Drop support
FTP and HTTP proxy server support
Allows for passive and non-passive file transfers
Supports UNIX, EPLF, Novell, MacOS, and NT (DOS) style directory listings
Full graphical configuration
Fully Internationalized