GoADF! is more than just your average ADF disk writing tool. It shows information about your ADF files, like filesystem type, used/free space on disk, and more, it can extract individual files from an ADF, it can mount ADFs as a logical drive to AmigaOS, of course it can write your ADF files to floppy disk, and it does a couple of other useful things.
It also has a nice Workbench GUI, and it's free. :-)
Get your copy of GoADF! at: