mantle

mantle is a free and open-source application for macOS that enables users to remap their keyboard keys through a visual interface, eliminating the need to manually edit configuration files. Designed for those who want to customize their Mac keyboard without dealing with syntax or text editors, mantle provides a graphical way to assign new actions to any key. It is powered by the Kanata engine, a high-performance Rust-based keyboard remapping engine, and aims to make advanced keyboard modifications accessible without requiring technical expertise.

The tool supports features such as layers, allowing multiple keyboard layouts that can be switched with a single key, and home-row modifiers, which let users map modifier keys like Shift, Control, Option, and Command to the home row for easier access. It also offers tap-hold functionality, enabling a key to perform one action when tapped and another when held, with configurable timing thresholds down to the millisecond. kbd configuration files or create new mappings from scratch, and export their settings later as needed. All changes can be applied instantly, with no need to restart the application or manually reload configurations.

mantle is delivered as a native macOS application compatible with both Apple Silicon (M1, M2, M3, M4) and Intel Macs running macOS 13 or later. The application runs entirely on the user's device, requiring no internet connection, telemetry, or account registration. Security and privacy are emphasized, as the tool does not log or transmit keystrokes, and the full source code is available on GitHub for auditing.

As a visual keyboard remapper, mantle is particularly suited for Mac users seeking to customize their keyboard layouts for productivity, ergonomics, or accessibility. Its integration with the Kanata engine allows for low-latency processing of key events, with no measurable impact on system performance. dmg format for easy installation on supported Macs.