Desowin
QTScrobbler (32-bit)
FreeTransfer play list from portable players and manage the tracks.
Windows
Rockbox Utility
FreeRockbox Utility: Upgrade Your Music Player
Windows
USBPcap
FreeUSBPcap: Open-Source USB Traffic Sniffing Tool
Windows
QTScrobbler (64-bit)
FreeSync Portable Player History with Last.fm and Libre.fm
Windows