open sans
http://www.fontsquirrel.com/fonts/open-sans

open sans condensed
http://www.fontsquirrel.com/fonts/open-sans-condensed

nina font
http://derechoaleer.org/media/fonts/nina/nina-dal.tar.gz

Liberation
http://www.fontsquirrel.com/fonts/Liberation-Sans
apt-get install fonts-liberation
