rSync

http://dailycupoftech.com/windows-backup-with-rsync-and-freenas/

torrent client

http://markus.revti.com/2009/11/installing-libtorrent-and-rtorrent-on-linux-centos/

http://libtorrent.rakshasa.no/

http://rtwi.jmk.hu/

nzbget daemons

http://nzbget.sourceforge.net/

http://www.techsono.com/supernzb/screenshot.html

http://www.techsono.com/usenet/faqs/nzb-o-matic-plus-nomp