There are many alternatives to Smoothmouse for Mac and since it's discontinued a lot of people are looking for a replacement. The best Mac alternative is MOS, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 10 alternatives to Smoothmouse and seven of them are available for Mac so hopefully you can find a suitable replacement. Other interesting Mac alternatives to Smoothmouse are SteerMouse (Paid), Razer Synapse (Free), USBOverdrive (Freemium) and Mac Mouse Fix (Free, Open Source).
The USB Overdrive is a device driver for Mac OS X that handles any USB mouse / trackball / joystick / gamepad / media keyboard and any Bluetooth mouse from any manufacturer and lets you configure them either globally or on a per-application, per-device basis.
Switch between Spaces, use Windows-style Back and Forward, and more - right from your mouse. Also features a refined Smooth-Scrolling algorithm that strikes a perfect balance between fluidity and control. Help make Mac Mouse Fix even better on GitHub:...
Smooze animates your scroll and adds functionality to your non-Apple mouse (scroll-wheel mouse). Disable scroll acceleration in macOS, Save time by attaching mouse buttons to actions, Grab Scroll, Auto Scroll, Gestures and more.