I thought to post on Indian Stock markets as a whole as there was no post for Indian stock markets which includes National Stock Markets and Regional Stock markets.
India has two national exchanges, the Bombay Stock Exchange (BSE) and the National Stock Exchange (NSE). Each has fully electronic trading platforms with around 9400 participating broking outfits. Foreign brokers account for 29 of these. There are some 9600 companies listed on the respective exchanges with a combined market capitalisation near $125.5bn.
There are also many regional stock exchanges across Indian cities, details of Regional stock exchanges of india is in this post