- swipe: move three fingers on the trackpad on any direction
- twist: rotate two fingers
- pinch: move two fingers away or closer to each other
- Swipe Left: Go back in history [press Cmd to open it in a tab]
- Swipe Right: Go forwards in history
- Swipe Up: Go to the top of the page
- Swipe Down: Go to the end of the page
- Pinch Together: Zoom out
- Pinch Apart: Zoom in
- Twist Right: Next tab
- Twist Left: Previous tab
It is available on Mac's with multitouch trackpa, including the Mac Book Air, the MAc Book Pro's releaed in early 2008, and the new laptops released later in 2008.
Download it and enjoy!