Top Alternatives to KeyTweak

SharpKeys is a lightweight, open-source utility for Windows that allows users to easily remap keyboard keys by modifying the Windows Registry. It provides a simple graphical interface to assign one key's function to another, including disabling specific keys entirely or creating custom input behaviors.

Karabiner Elements is a powerful and open-source keyboard customization utility specifically for macOS. It allows users to remap keys, modify key behavior, define complex macros, and control various input devices, providing unparalleled control over keyboard input for enhanced productivity and personalized workflows.

Microsoft Keyboard Layout Creator (MKLC) is a utility from Microsoft enabling users to create or modify existing keyboard layouts for Windows operating systems. It's a crucial tool for developers, linguists, and anyone needing customized input methods not covered by standard layouts.