DXtreme Station Log offers a multitude of reports! I can very easily run
a Performance report for DXCC® entities, grids, IOTA numbers,
and more — for my entire log, or just a
subset of my log.

For now, I use the Set Criteria window to run a Performance report that
shows the DXCC entities I've worked while operating QRP (0.1 to 10 watts)
from January 1 to April 26, 2003.

You can define and run your own reports on the Set Criteria window!
Perhaps you would like to run a report for a specific
antenna — to see how well it performs?

Or for a particular band, mode, or
user-defined field?

As you can see, there are many possibilities
on the Set Criteria window!