Mouser is a lightweight, open-source mouse remapper that provides a fully local alternative to Logitech Options+ for remapping Logitech HID++ mice.
The tool solves the problem of being locked into Logitech's proprietary software by offering direct hardware remapping without requiring cloud connectivity, telemetry, or a Logitech account. It communicates directly with compatible Logitech mice using the HID++ protocol to remap buttons and configure device behavior entirely on the user's machine.
Mouser is best suited for users of MX Master and MX Anywhere mice, which receive the most complete feature support and native UI integration. The tool also detects and provides fallback support for additional Logitech models, though with potentially reduced functionality. Anyone choosing this tool should expect a zero-installation experience—the application runs directly from a downloaded executable on Windows, macOS, and Linux—and operates silently in the system tray or menu bar once launched. The README explicitly positions it as an alternative to Logitech Options+, offering the same remapping capability without proprietary overhead.
The project shows consistent maintenance with regular updates addressing user-reported issues and expanding device compatibility. Development activity includes active bug fixes and feature refinements based on community feedback. The maintainer responds to issues and pull requests, indicating ongoing engagement with the user base. The codebase remains focused on core remapping functionality rather than feature bloat, reflecting a deliberate design philosophy around simplicity and reliability.
