jstest-gtk

Small tool to test and calibrate joysticks

Jstest-gtk is a simple joystick tester based on Gtk+. It provides you with a list of attached joysticks, a way to display which buttons and axis are pressed, a way to remap axis and buttons and a way to calibrate your joystick. Even when your joystick is working mostly fine, you might want to give it a try, as the calibration lets you get rid of overlarge default deadzones that many joysticks use and which are a noticeable problem in some games. Using appropriate apps in addition to this one will allow you to store your calibration settings and mappings and have the automatically restored.