Key Remapper software (version 2.3) is a versatile program that allows users to modify the functions of keyboard keys, mouse buttons, and mouse wheel actions. It enables advanced customization, including the ability to block keys, remap them with other keys or key combinations, and even assign system-wide hotkeys. The software supports profiles, allowing users to switch between different key configurations easily. It has an easy-to-use interface that supports both individual and mass key actuation changes.