Stanford University: http://www.stanford.edu/
Stanford University / Copyright Renewal Database: http://collections.stanford.edu/copyrightrenewals/
Stanford University Libraries: http://library.stanford.edu/
SUDOC (Système universitaire de documentation): http://www.sudoc.abes.fr/
SUD-PTT: http://www.sudptt44.org/
SVA (Silicon Valley Association, Suisse): http://www.siliconvalley.ch/
Symbian: http://www.symbian.com/
Symbian OS: http://www.symbian.com/symbianos/
Systran: http://www.systransoft.com/
TACTweb: http://tactweb.humanities.mcmaster.ca/