wrote:
Does anyone know if the various soaring software packages are available
or work with a Mac?

Only a few.

http://flighttrack.sourceforge.net/ - 3d flight view
http://www.human-software.nl/geops/ - logger downloads
http://pc12-c714.uibk.ac.at/GPLIGC/GPLIGC.php - flight viewing

A flight sim http://www.silentwings.no should have a mac version out
soon.

Other software needs to be run in a virtual machine. I am currently
using SeeYou with Parallels on a new intel mac book pro. It works
great. I use a Keyspan USB/Serial adapter.

Todd