GP Link is a Linux port of a Gamepark32 program to transfer files over the GP32's USB cable using the built-in transfer program. While this program was great, it didn't take into account the fact that Linux offers the ability to use filenames that are not valid under a FAT filesystem. These are modified versions of gplink that attempt to compensate for this. These programs are rather dated and probably superceeded by ucon64 or some other program.
Kuwanger.net - Sort of like stag beetles in tubes.