Programing
http://www.planetsourcecode.com
Best site of open programmerse community website on the web for
c,c++,vb,java and more.
http://www.programmersheaven.com
As the name implies another best site for open source and example codes
http://www.codeguru.com
As the name implies the site is the guru for programers.
Spiritual
http://www.sivanandadlshq.org
Here you can freely download a large no of Indian Philosophical
books such as Bagavath Geetha,Yoga,Vedhandha,Adwaitha etc.
http://www.sreeramakrishnamath.org
Home site of Sreeramakrishna math Chennai(a foundation by one of the
great Indian philosophical leader Sree Swami Vivekananda).
From this site you can get the great books of Vivekananda such as
Rajayoga(English),Karmayoga(English) etc
http://www.geocities.com/manap_99/sai.htm
You can download another great Indian philosophical book Bagavath
Geetha html file from here