What are some alternatives?
When comparing Xpadder and InputMapper, you can also consider the following products
DS4Windows - DS4 Tool for Windows
JoyToKey - JoyToKey enables you to control any softwares (e.g.
reWASD - First and only gamepad mapper to make Xbox Elite paddles separate buttons.
AntiMicro - A tool for mapping keyboard and mouse events to gamepads and joysticks.
Pinnacle Game Profiler - Pinnacle Game Profiler enables the use of virtually any game controller (gamepad, joystick, etc.) with any PC game. It's preconfigured for most game titles and controllers. Just download and play.
X360ce - TocaEdit Xbox 360 Controller Emulator