What are some alternatives?
When comparing jstest-gtk and Gaming Keyboard Splitter, you can also consider the following products
DS4Windows - DS4 Tool for Windows
JoyToKey - JoyToKey enables you to control any softwares (e.g.
Xpadder - Xpadder simulates the keyboard and mouse using your gamepad What does Xpadder let you do?
InputMapper - Input Mapper is designed to bridge the gap between the devices you use and the games you play.
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.
reWASD - First and only gamepad mapper to make Xbox Elite paddles separate buttons.