Excellent feeds to their own software and to QT. Lets you trade through TRAC ECN to buy at the BID and sell at the ASK. $12.95 per trade no limits. I have bought as many as a million shares of penny stocks at a time. Level I-II and level II pinks. Options and futes real time too.
Cost for full feeds about $120 but discounts for frequent trades makes it free usually.