phill, I have used QT for years. It is the real deal. It is supported by banner ads at the top of the main screen. If you want to eliminate the ads, you pay 60 bux a year. I have paid it because you also get (now) 10 days of intra day charts while with the free version you get only 2 days of intra day charts.
The guys who work with QT have told me they are a bunch of geeks who "love writing code." BTW, customer service is EXCELLENT.
ot, phil, They have a small portion of the screen at the top that has adds in it. Is pretty small really. You can subscribe and the ads go away. They have excellent support. You can cover the ads with Graphs like I do.