Tonight I found the following software Stellarium
http://www.stellarium.org/ It blew me away

. There are a few links to some pieces of software in the Site Menu at left. I am surprised that there are not more mentioned on the site.
Personally I use Jupiter2
http://www.astrosurf.com/rondi/jupiter/ which a user told me about in an earlier post. Another user informed me of
Cartes de Ceil
http://www.stargazing.net/astropc/ which I use regularly
The first piece of software I used and and sometimes still use is Skychart Demo III
http://www.southernstars.com/skychart/
Google earth has a recently new feature google sky
http://earth.google.com/sky/skyedu.html
I am sure that there are many more free software packages that iceinspace members use. Perhaps a list may someday be posted on the site with hyperlinks.
Also Astronomy 2008 is a great read. Now if only th esky would clear.
Peter