Apps similar to Bettermouse include X-Mouse Button Control, which is free. Other options are Logi Options+, MOS, SmoothScroll and LinearMouse. There's no shortage of Mouse Remapping Apps like Bettermouse, with more than 25 alternatives for Mac, Windows, Linux, the web and Android.
Smoothwheel is an addon for Firefox, Thunderbird and SeaMonkey, which scrolls the page smoothly when scrolling the mouse wheel (or keyboard arrows if enabled). It works on all platforms supported by these applications.
The Magic Mouse's whole top shell is a touch surface, and it stays live while you click. So every click is also a tiny swipe — you press down, your finger rolls half a millimeter, and the page jumps. Drag a window and the document scrolls out from under it.
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Liss lets you auto-scroll in any app on your Mac using your scroll wheel mouse. Smooth, customizable scrolling with a single button.
