C
http://www.ssh.fi/tech/crypto/
http://members.tripod.com/steganography/stego.html
http://www.demcom.com/english/steganos/index.html
http://www.nai.com/asp_set/products/tns/intro.asp
Diving
http://www.subsinai.com/eng/home.html
http://www.diversguide.com/
http://www.diversguide.com/umbarak/
Most recomended dive club in Sharem El Sheikh
http://www.skin-diver.com
http://www.undercurrent.org/
http://www.performancecat.com/
Misc
http://www.sysinternals.com/
Advanced utilities, technical information and source code related to Windows.
Search Engines
http://www.northernlight.com/
One of the best !!!!