Natural Scrolling is a GNOME Applet allowing you to reverse the direction of scrolling. You push your fingers upwards to move the page content upwards (and downwards for downwards) just like on iOS devices. Don't move scrollbars anymore but your file.

Natural Scrolling can be installed in Ubuntu 10.10, 11.04 and 11.10 from its own PPA.

sudo add-apt-repository ppa:zedtux/naturalscrolling
sudo apt-get update
sudo apt-get install naturalscrolling

• If you're running Unity, press Super key, or click on the Ubuntu icon then write naturalscrolling to search it and click it.
• If you're running GNOME Shell, press Super key, or move your mouse in the up left corner of your screen, then write naturalscrolling to search it and click it.
• Otherwise press ALT + F2, then type then write naturalscrolling to search it and execute it.