MB-GPS2KML converts a GPS log file (in plain NMEA format) to a KML file (placemark file for Google Earth) and opens this file in Google Earth.
Velocity, number of satellites and HDOP are interpreted as height, color and size of the icons.

• GE-Path 1.4.4
  GE-Path was developed to make paths and/or draw circles and polygons with place marks saved by Google Earth. The data can also be typed into the application or pasted/exported...

• GE-Graph 2.2.21
  Make graph into Googlr Earth to illustrate your presentations, papers, etc