winptpcam - digital camera (compatible with Picture Transfer Protocol) software for getting images to PC on older systems. Currently it is a port of Marius Wolosin's libPTP2 for MinGW and libusb-win32.
gptp is a simple gtk frontend for libptp which lets you control the settings and download images from your (Picture Transfer Protocol able) digital camera. so far only a few basic functions are supported and it was only tested with my Nikon D80.