Listing gvSIG advantages?
As suggested by simo, I posted this question onto gvSIG mailing list and got the following answers/links:
This discussion archive can also be read in context at Nabble: gvSIG advantages
gvsig uses sextante as raster processing framework.
Take a look at what you can do with it:
http://sextantegis.blogspot.com/,
http://sextante.forge.osor.eu/
Sextante integrates a lot of GRASS algorithms inside (AFAIK you should have GRASS installed for those algorithms to work).
Interesting links about gvSIG:
gvSIG Quickstart: http://live.osgeo.org/en/quickstart/gvsig_quickstart.html
gvSIG Courses: http://www.gvsig.org/web/docusr/learning/gvsig-courses-1#english
Videos: http://www.gvsig.org/web/projects/gvsig-desktop/tour/videos
User manual: https://gvsig.org/web/projects/gvsig-desktop/docs/user/gvsig-desktop-1-11-manual-de-usuario/gvsig-desktop-1-11-manual-de-usuario-en/
This review compares some of the various tasks able to be completed by the various leading packages around.
http://gis.fossworkflowguides.com/#external