Key Manager is described as 'reveals the full potential of your keyboard and mouse and allows you to save time and efforts while working with your computer' and is a Key Mapping tool in the system & hardware category. There are more than 50 alternatives to Key Manager for a variety of platforms, including Windows, Mac, Linux, X11 and Java. The best alternative is AutoHotkey, which is both free and Open Source. Other great apps like Key Manager are X-Mouse Button Control, FastKeys, SharpKeys and Karabiner Elements.
All in one Windows automation software. Fully configurable text expander, start menu, shortcuts, auto complete and mouse gestures. User-defined commands to run files, open webpages, send macros or automate anything. Incredibly powerful but yet simple to use.
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).