option scenario analyzer

#1
Hi,
Any ideas on any good option scenario analyzer (ideally free but wouldn't mind paid ones too).
Idea being if i have a portfolio of nifty options and want to see how much my pnl would at a future date d if nifty changed by 100, 200, 300, 400 points.
If somebody has used bloomberg, I'm looking for functionality similar to OSA function.

Regards,
 

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