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What sets the NASA maps apart is that they also usually show the coverage area of the three primary TDRS relay satellites, and marks on the future ground tracks to indicate orbital sunrise and sunsets. As the shuttle (or ISS) moves about the orbit, those coverage circles help visualize the "TDRSS handovers" where communications will drop out for a minute or a few. You may also notice on the ISS map view, the range circles about the Russian ground stations. During de-orbit and re-entry the background goes black and you'll see blue range circles about the various US radar tracking sites. During Joint-Ops with both Shuttle and ISS, they show Lat/Lon/Alt stats in the upper corners of the display. Lots of things they can turn on/off.
My recollection (circa 1997 or so) was that the old DOS based STS-Orbitsplus did all this - TDRSS coverage, coverage circles for tracking/ground stations, even the South Atlantic Anomaly zone.
But I'm not sure how friendly our newer OS's are toward this intensely graphical DOS app. I ran it on a 100mhz 486 with dos5. Also ran Instantrack, and I know it runs fine in a command window. But STSorbits was a little more picky with graphics, as I remember.
Rich, N8UX