aprspoint 4.0 available, with improved tracking
 

When you are tracking a moving object, aprspoint will record all its
positions on the map, and optionally connect them with lines to form a
track. If you are tracking multiple moving objects at the same time,
the map could get cluttered quickly. In this new version, you can
choose to selectively remove an individual object's track, or remove
all tracks on the map. This version also includes fixes for several
bugs reported by the users. We have also tested it extensively on the
Vista platform as well. Old keys will no longer work on this new
version, please refer to the web site http://www.aprspoint.com for
upgrade details.

Michael Cai, KF6ZDM