Geoclock - GeoClock shows the current time with a high quality map of the earth.
EchoLink^® software allows licensed Amateur Radio stations to communicate with one another over the Internet, using voice-over-IP (VoIP) technology.
Grid Squares and Grid Locators - At the ARRL website here.
Grid-Square Calculator From the ARRLWeb.
DigiPan - DigiPan provides a panoramic display of the frequency spectrum in the form of an active dial scale extending the full width of the computer screen. Depending upon the transceiver IF bandwidth, it is possible to “see” as many as 40 to 50 PSK31 stations at one time.
DXLab - DXLab is a freeware suite of eight inter operating applications designed to automate amateur radio DXing activities.
Free Field Day Logging Software - WR9R
HamScope - HamScope is a multi-mode communications interface for amateur radio that supports:PSK31 BPSK and QPSK,RTTY,ASCII,MFSK16,PACKET and CW.
Black Cat Systems - Software programs for many interests . All of the software programs are available for download to try out before you buy, but do cost money.
DX soft - Windows Ham radio software.