here is the initial list of links
(Note: there are 2 categories Technologies and Organizations)


Portal
 http://www.imsproject.org/
 http://www.npac.syr.edu/users/gcf/cps714portalmay99/
XML
 http://www.npac.syr.edu/projects/tutorials/XML/
 http://technet.oracle.com/tech/xml/
 http://www.oracle.com/xml/
 http://www.xml.com/
 http://www.xmlsoftware.com
 http://msdn.microsoft.com/xml/
Database
 http://www.npac.syr.edu/projects/tutorials/Database/
 http://www.npac.syr.edu/projects/tutorials/JDBC/
 http://www.oracle.com/database/oracle8i/ 
NPAC
 http://www.npac.syr.edu/
 http://www.npac.syr.edu/projects/tutorials/
 http://www.npac.syr.edu/projects/PET/
ARL
 http://www.arl.hpc.mil/
ASC
 http://www.asc.hpc.mil/
NCSA
 http://www.ncsa.uiuc.edu/
 http://aim.ncsa.uiuc.edu/