Is there any shortcut to iterate through Excel's worksheet tabs?

Windows:

• Switch between worksheets: CtrlPgDn or CtrlPgUp

• Switch between workbooks: CtrlTab or CtrlShiftTab

OS X:

• Switch between worksheets:
  FnCtrl↓ or FnCtrl↑ on a small keyboard
  Ctrl⇞ or Ctrl⇟ on a keyboard with numpad

• Switch between workbooks: CtrlTab

For mac OSX:
To switch between tabs in a worksheet: Fn + Command + up/down!

Right click on any bottom corner left arrow keys, you will see list of all sheets and select the required sheet on the workbook.

Refer my screenshot:-