There are multiple stock trading online tools available in the market.
I would like to share some of the best trading software tools that I experienced as a trader. I choose them on the basis of technology level, the pace of the trading platform with advanced analysis tools.

Below are few of them that helped me to know the company's perks and downside, usual market indicators :
Zerodha
Best screener s IIFL market app
IIFL TTIRIS
Motilal Oswal Trade.