GamePad Companion allows you to use HID compatible devices (gamepads, joysticks, etc..) with Mac OS X. This means that you can use many of the joysticks and gamepads that haven't had their drivers updated for Mac OS X! It should be possible to simultaneously use up to 5 HID devices with GamePad Companion.
What's new in GamePad Companion
General Bug Fixes
Minecraft bug fix
"View Current Layout" bug fix
Added "Reset" layout option to fix bug related to layout configurations