SensibleSideButtons is a macOS menu bar utility that enables back and forward navigation using the side buttons on third-party mice. It addresses the limited functionality of mouse buttons M4 and M5 in macOS, where they do not consistently navigate application history. Instead of assigning ordinary keyboard shortcuts, the application simulates native three-finger swipe gestures. This allows navigation in many applications that support macOS history gestures, including web browsers and other compatible windows. Users can move backward or forward without reaching for the keyboard or trackpad. The utility operates system-wide rather than requiring separate configuration for individual applications. It can be configured to start automatically when the user signs in. SensibleSideButtons supports macOS 10.13 and newer.