Exchanges
National Stock Exchange of India (NSE)
http://www.nseindia.com/

Bombay Stock Exchange - (BSE)
http://www.bseindia.com/

NCDEX National Commodity & Derivatives Exchange - (NCDEX)
http://www.ncdex.com/

MCX Commodity Exchange - (MCX)
http://www.mcxindia.com/

MCX Stock Exchange (MCX - SX)
http://www.mcx-sx.com/

Depositories
National Securities Depository Ltd (NSDL)
https://nsdl.co.in/

Central Depository Services (India) Limited (CDSL)
http://www.cdslindia.com/