Tracking sites
http://mailtracking.com/ (?) Partly free I think.
http://www.ipaddresslocation.org/ (4) Free

Maps
https://maps.google.com/ (5) Free
http://wikimapia.org/ (5) Free
http://www.nationalgeographic.com/maps/ (3) Free
https://maps.yahoo.com/ (3) Free
https://www.bing.com/maps (4) Free
http://www.nabber.org/projects/geotrace/