A tabbed browser can display a different webpage on each tab.
These versions are very well tabbed and easy to use.
Fret Play: In addition to an extensive list of guitar tabs, FretPlay also features several songs tabbed out for the bass.
The site has all twelve songs from the album Three Days Grace tabbed for the guitar.
X Guitar: X Guitar has bass tabs too, and the entire Three Days Grace's debut album is tabbed out for the bass guitar here.
MX Tabs - Another version of I Can Only Imagine has been tabbed out at MX Tabs.