Who is the market maker?

I have been reading about some technical analysis book. I came across the reference to market makers. I would like to know who is a market maker? Who is the market maker in India?

Here is a good article on market maker, http://www.mayin.org/ajayshah/MISC/lob-example.html

As an example if you want to buy into goldbees then Benchmark is the market maker.

Hi Raj,

Many thanks for the useful link and reply