What are some alternatives?
When comparing Xpadder and DS4Windows, you can also consider the following products
InputMapper - Input Mapper is designed to bridge the gap between the devices you use and the games you play.
AntiMicro - A tool for mapping keyboard and mouse events to gamepads and joysticks.
reWASD - First and only gamepad mapper to make Xbox Elite paddles separate buttons.
JoyToKey - JoyToKey enables you to control any softwares (e.g.
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.
ScpToolkit - Windows Driver and XInput Wrapper for Sony DualShock 3/4 Controllers. SourceForge is not affiliated with ScpToolkit.