Microsoft keyboard layout creator is described as 'Ever wanted to quickly and easily define your own keyboard layout for a language Microsoft doesn't support? Or define your own keyboard layout so you can quickly and easily enter your favorite symbols with a simple keystroke?' and is an app in the OS & Utilities category. There are more than 10 alternatives to Microsoft keyboard layout creator for Windows, Mac, Online / Web-based and Self-Hosted solutions. The best alternative is SharpKeys, which is both free and Open Source. Other great apps like Microsoft keyboard layout creator are Karabiner Elements (Free, Open Source), KeyTweak (Free), Clavier+ (Free, Open Source) and Key Manager (Paid).
SharpKeys is a utility that manages a Registry key that allows Windows to remap one key to any other key. Included in the application is a list of common keyboard keys and a Type Key feature to automatically recognize most keyboard keys. It was developed in C# using .NET v2.
Karabiner, previously called KeyRemap4MacBook, is a very powerful keyboard remapper for Mac OS X. In addition to simple key remapping, it has special remapping modes like Emacs-mode, SandS-mode (Space and Shift).
The macOS supports an XML-based format for keyboard layouts (.keylayout files). However, modifying keyboard layouts—let alone creating entirely new keyboard layouts, such as for a new script—by directly editing the XML text is tedious and error-prone.