I am using Zerodha online equity service since 2016. Earlier I have traded with Sharekhan but trading with Zerodha will give you different experience. They have opened my account free.
Zerodha is a discount broker and comparatively you have to pay less brokerage. They do not charge anything for equity delivery and have a flat brokerage of Rs 20 for F& O trades. Intraday charge is 0.01% .
They have a vast extent of information in Zerodha Varsity. They have two main trading platform tools - Kite and PI. Both of these are pretty decent with lots of charts, analysis tools etc. I use heir Kite mobile application and this is good.
But no one is perfect in univers so as Zerodha and here are few things I will mention:
You may find some problem while trading. Sometimes software or even their web based application stop responding.
During big news like Brexit, they limit themselves to give benefits like margin money.
Their products has a few bugs as well. I have sporadically seen a few errors in their graphs like same candle showing up twice and so forth.
CONCLUSION
Zerodha is a good platform for those who trades a lot because Zerodhas brokerage is very low. It is very hard to make profit by trading with other brokers like Sharekhan, ICICI Dirdct as their brokerage is very high.