Sun System Administrator Ressources
www.sun.com/bigadmin/

OpenSolaris
www.opensolaris.org

Blastwave - Open Source Software Packages for Solaris
www.opencsw.org

Patch Check Advanced (Analyze, download and install patches for Sun Solaris)
www.par.univie.ac.at/solaris/pca/

Ihsan Dogan's Solaris Blog
blog.dogan.ch