A developer has created MouseControl, an open-source button remapper for the Logitech MX Master 3S mouse that eliminates the need for Logitech's proprietary software. The project emerged after users reported Logitech Options+ consuming excessive CPU resources on Intel MacBooks, with the updater process taking 40-60% of system resources until manually terminated.

Built with Python and Qt Quick, MouseControl offers per-application profiles, DPI control from 200-8000, scroll direction inversion, and gesture button support through HID++ 2.0 communication. The tool works on both Windows and macOS, requiring no Logitech account or cloud services. Configuration is stored locally in JSON format, and the application runs from a system tray with zero external dependencies.

The project addresses growing frustration with Logitech's closed ecosystem while providing a privacy-focused alternative. With features like auto-reconnection, live connection status, and support for all six programmable buttons, MouseControl represents a viable replacement for users seeking control over their hardware without telemetry or account requirements.