http://www.quranchannel.com/
Here yu can get quran channels and radios and related websites

http://www.cbseguess.com/
This website gives you information about central board of secondary education syllabus,question papers,study materials and cbse news and so on.

http://mathworld.wolfram.com/
This is the best mathematical reference guide on web.

http://www.assabile.com/
You can listen or download quran recitation of world famous qaris and islamic nasheeds of different singers