ScrollNavigator is described as 'helps you to scroll your documents horizontally and vertically. Simply click and hold down the right (or the middle) mouse button anywhere in a window and move the mouse to scroll the window contents' and is an app in the Office & Productivity category. There are three alternatives to ScrollNavigator for Mac and Windows. The best alternative is MouseImp, which is both free and Open Source. Other great apps like ScrollNavigator are Scroll Reverser (Free) and DragToScroll (Free).
MouseImp PRO is a successor of MouseImp that became popular all over the world. Many users’ wishes were considered in this new version of MouseImp, and many improvements have been implemented, making it even faster and more reliable.
Scroll Reverser is a free app for Mac OS X Snow Leopard and Leopard that reverses the direction of scrolling. With reverse scrolling, the page content moves in the same direction that you move your fingers, just like on iOS devices and OS X Lion.