1581-Copy - CBM 1581 floppy disk copy utility for DOS. Imports and exports 1581 disks to a PC based 3.5" floppy drive and disk controller..
DirMaster - Windows-based tool for the management of emulator formats (.d64, .d81, .d2m, etc) and archival formats (.arc, .sda, .lnx, etc).
Final TAP - Tool for working with digital copies of .TAP cassette files..
gui4cbm4win - Graphical front-end to cbm4win which allows user to read/write to real serial Commodore floppy drives (1541, 1571, etc) under Windows 2000 or XP..
LNG: LUnix, the Next Generation - An experimental operating system for the Commodore 64/128. The open source project is hosted at SourceForge and has been ongoing since 1993..