sudo, to give specified users certain rights. (/usr/ports/security/sudo)
visudo, installed with sudo, a vi-editor (which can be changed) that will edit the sudoers file and also check for syntax errors.)
lsftp (/usr/ports/ftp/lftp) a very simple yet versatile text ftpclient.
screen (/usr/ports/sysutils/screen) an incredibly useful program
http://www.scottro.net/qnd/qnd-screen.html
gives quick rundown of some of its uses.