callbook retrieves information about a given callsign from hamqth.com and qrz.com and prints this information.

cw uses a cwdaemon server running locally on port 6789 to output CW.

dxcc prints information about a given DXCC prefix.

latlon calculates the distance and azimuth between two coordinates given as pairs of latitude and longitude.

locator calculates latitude and longitude for a given maidenhead locator.

supercheck uses the Super Check Partial callsign database from http://www.supercheckpartial.com/ to find callsigns that are similar to a given string.