QuoteTracker itself is free. You do need to have a datafeed to use with it. If you use your broker, there is no extra fee. QT does integrate with IB, but note that if you have your own software that connects to IB, whatever # of symbols you track in QT will count against the max 100 that IB has.
You can get around that. QuoteTracker has its own API that lets you get data via QT from any datafeed supported by QT, including IB. So, you can have QT get data from IB, then have your application connect to QT to get the quotes. There would only be one connection to IB (via QT).
Though QT can be used for free, you do need to register in order to utilize the API connectivity. Registration is $7/month or $60/year: http://www.quotetracker.com/register