Ctrl + Tab: move to the next tab
Ctrl + Shift + Tab: move to the previous tab
Ctrl + 1 through Ctrl + 8: switch to a specific tab
Ctrl + 9: switch to the last tab
On Mac: Command + Option + Right Arrow: move to the next tab
On Mac: Command + Option + Left Arrow: move to the previous tab
On Mac: Command + 1 through Command + 8: switch to a specific tab
On Mac: Command + 9: switch to the last tab