Mos

Name: Mos
Author: Caldis

A lightweight macOS utility that smooths mouse wheel scrolling and sets scroll direction separately for mice.

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About Mos

Mos is a small macOS tool for people who use a regular mouse with a Mac. It smooths the stepped scrolling of a mouse wheel so it feels closer to a trackpad, and lets you set the mouse scroll direction independently from the trackpad's natural scrolling.

The project is widely used, with a large number of stars on GitHub, and its documentation is available in several languages including Chinese, English and German.

Strengths

Smooth scrolling for ordinary mouse wheels
Separate scroll direction for mouse and trackpad
Lightweight and focused on one job

Limitations

macOS only
Covers scrolling only, not button remapping

Details

Pricing: FreeFree to download from GitHub.
License: Proprietary
Developer: Caldis
Platforms: macOS
How it runs: Downloadable app
Account: Not required
Works offline: Yes
Best suited for: Mac users with a standard mouse who want trackpad-like scrolling
Categories: System utilities
Last verified: September 23, 2026
Added: September 23, 2026
Provenance: Facts checked against the developer's own pages and store listings, 1 sources on file.

Alternatives to Mos

Compare all

Software that can replace Mos for an important use case, and what changes if you switch.

LinearMouse
Customises mouse and trackpad behaviour per device on macOS.
Free Open sourcemacOS
LinearMouse is open source under MIT and sets scroll direction, acceleration and button actions separately for each connected device, going beyond Mos's scrolling-only focus.
Mac Mouse Fix
A macOS app that improves third-party mice with smooth scrolling and gestures on extra buttons.
PaidProprietarymacOS
Mac Mouse Fix adds click and drag gestures on extra mouse buttons alongside smooth scrolling, but it is a paid app described as a work in progress.
SteerMouse
A Mac utility for customizing mouse buttons, scroll wheels and cursor speed.
PaidProprietarymacOS
SteerMouse is paid and focuses on remapping buttons, chords and cursor speed for USB and Bluetooth mice, but it does not support Magic Mouse or Magic Trackpad.