Marble Mouse Scroll Wheel, or just Marble Scroll, is a small program designed to simulate a scroll wheel on any trackball or mouse without one. It was specifically designed for the Logitech Marble Mouse but can work with any standard mouse or trackball. It is designed for Windows 2000 and up.
Marble Scroll is a replacement for Logitech's Autoscroll and Universal Scroll functions; neither properly emulate a real scroll wheel and both have limitations and flaws.
Marble Scroll works with any mouse or trackball and does not require Logitech's SetPoint or MouseWare drivers to be installed.