The Magic Utilities support horizontal mouse scrolling.

Unfortunately, not all applications which support vertical scrolling do support horizontal scrolling. The reason is that horizontal mouse scrolling was introduced "late" to Windows with Windows Vista.

There are many well-known applications which support horizontal mouse scrolling like:

Microsoft Excel does not support horizontal mouse scrolling (only Microsoft knows why).
As a workaround, use a middle click (configurable in the app) to pan through your spreadsheet.

We are currently investigating the new Windows 10 input interfaces which will support scrolling in any application.