Too often we Java people don’t give Microsoft credit for the small but useful things that they do.
If you are Unix head trapped in a Microsoft body (e.g. you must use Windows at work), then you probably miss tools like du (find out disk usage for folders).
While Cygwin gives you the power of the Unix command line (and more) within Windows, what happens if this is restricted as well?
One tool that you may find useful is DirUse from Microsoft.
What other Windows tools do you find useful as a Java Developer? (please don’t flame me with ’should be using Linux’ :-)