Top Alternatives to Karabiner

AutoHotkey is a free, open-source custom scripting language for Microsoft Windows.

AutoIt v3 is a freeware BASIC-like scripting language designed for automating the Windows GUI and general scripting.

BetterTouchTool is an app that allows you to configure many gestures for your Magic Mouse (1 & 2), Macbook Trackpad and Magic Trackpad (1 & 2) and also Mouse Gestures for normal mice.

SharpKeys is a utility that manages a Registry key that allows Windows to remap one key to any other key.

Automator is an application that implements point-and-click (or drag and drop) creation of workflows for automating repetitive tasks into batches for quicker alteration, thus saving time and effort over human intervention to manually change each file separately.

Kantu Web Automation Browser is a visual web browser automation software.

KeyTweakhelps you remap keys on your keyboard quickly and easily.

Microsoft Keyboard Layout Creator allows users to create or modify keyboard layouts.