www.bazaartrend.com also has realtime charting. They have a provision for realtime stock. Free version allows realtime display for 1 stock at a time, and if you want to watch multiple stocks, they do have paid version which costs 700 per month.
One additional piece of info please...which are the sites that allow an export of the charts (so that we can take these and draw our own trend lines etc.) What I mean is is there a way to take these graphs into a drawing software (say MS Paint or Visio) or whatever, so that we can play with these graphs.
Lots of companies do provide, if you pay more than 2500 for charting, it means you are being taken for a ride!!!!
icharts provide for around 700 pm
Trade tiger from sharekhan is free, you only have to open an account
Amibroker you can take trial version and pay around 1,600 for best data feed from global data feeds