While the Raspbian OS does include a web-browser you will find that the Iceweasel (Firefox) browser performs the best.
sudo apt-get update
sudo apt-get upgrade
sudo apt-get install iceweasel
I agree Iceweasel is a great browser, Kweb is also a great browser it being a minimalistic web browser which has mainly the most important features of a web browser but keeping it small to achieve the Kiosk feel