You are definitely thinking of Medved QuoteTracker Here is a screenshot (it shows trading integration and one chart, but you don't have to use the trading integration if you don't want to and can have as many charts open as your system can handle. Fully custumizable:
fyi, many many traders report data inaccuracies in prophet.net and also in scottrade.com - so be aware of that.
More cheap charts: http://stockcharts.com (has real time service) http://www.marketcenter.com (from esignal) http://www.money.net/