wget -O - http://deb.opera.com/archive.key | apt-key add -
wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key add -
echo "deb http://deb.opera.com/opera/ stable non-free" > /etc/apt/sources.list.d/opera.list
echo "deb http://dl.google.com/linux/chrome/deb/ stable main" > /etc/apt/sources.list.d/google-chrome.list
aptitude update
aptitude install opera iceweasel google-chrome-stable