What are some alternatives?
When comparing MouseImp and Yet Another Smooth Scrolling, you can also consider the following products
Scroll Reverser - Scroll Reverser is a free app for Mac OS X Snow Leopard and Leopard that reverses the direction of...
Smooze - Smooze animates your scroll and adds functionality to your non-Apple mouse (scroll-wheel mouse).
ScrollNavigator - ScrollNavigator 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.
Caldis MOS - A little job for your mouse.
Smart Scroll - Smart Scroll makes scrolling smoother, faster and more comfortable:
iMouseFix - Modifies the Mac acceleration curve to better suit your style.