Hi Pankaj,
Thank you for your favourable reply. The options data in the expiry datewise will be really helpful for analysis.
Also let me to say something for capital market EOD data. The NSE is daily publishing the delivery volume for each scrips as a *.dat file. if the delivery volume is added as open interest in equity EOD, that will be an extra advantage for the tool and give more utility to the users. I mean Ticker,Date,Open,High,Low,Close,Volume,Delivery Volume.
Thanking you,
Regards,
Pramod.