antimicro is a graphical program used to map keyboard keys and mouse controls to a gamepad. This program is useful for playing PC games using a gamepad that do not have any form of built-in gamepad support.Discontinued
The latest release was on November 5th, 2016. A new generation of the program called AntiMicroX is available.
AntiMicro vs Joy2Key opinions
It's more recently developed and highly configurable
QJoyPad is a free Linux/QT program that lets you control any keyboard XWindows program with a gaming device
The program is no longer updated. Last version, 4.1.0, released in February 2010, can be still downloaded from SourceForge.
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.Discontinued
No news since May 2009
Rejoystick - A gamepad/joystick translator/keymapper
Rejoystick is a program that maps keypresses on your gamepad/joypad/joystick to keypresses on a keyboard when you are running X. Since it uses SDL to communicate with the gamepad device, it can work on every platform that prov.Discontinued
The program is no longer updated. Last version, 0.8.1, released in September 2008, can be still downloaded from SourceForge.