The Java charts by Prophet are (or at least were, a couple of months ago) terrible for real time use. Instable, you get twice the two o'clock line next to each other and that sort of thing. Or the chart not shifting with time progressing, and all that.
They are nice for backtracking quotes from previous days though. And you don't have to register for that.
I also had the trial for their ProphetStation, (which is basically a clone from QuoteTracker, except that it can backfill the data of the whole day as well) but at times their datafeed did not work at all. So I can't recommend it.
Hey, but what I'd like to know, is: Has anyone any experience with Scottrade as a datafeed supplier? (not as a broker)
I am in the process of bringing together several accounts into one, in order to meet the 25K rule (I just manage

), and that means plundering my Datek account, so I don't think Datek will be willing to still fill my Quotetracker while I have a zero $ account with them.
Scottrade is currently offering FREE real-time quotes, and it seems that QuoteTracker can handle them.
So Scottrade - is it any good for QuoteTracker?