Another one I use is JStock - Free, non-profit outfit. It's advantage is that it will update data from 2 seconds, 5, 10, 20, etc. up to an hour and then can switch to Minutes, or hourly with same span, i.e., 2 minutes, 5 minutes, etc., or 2 hours, 5 hours, etc. The only drawback is the conversion. It will save in cvs format but you must get it in the correct MS format -I use a spreadsheet. But it is a hassle so while I use JStock during the day to check fast updates, I use PSM for conversions.

Both of the above provide free quotes - no subscriptions.

Finally, if you are trading fast & furious (I don't) then subscribe to "tradingview.com". Real time available, for a price but reasonable,. I got a 2 year deal for $179 which also includes extended market, prior to Opening Market and overnight quotes on Gold/Silver/ Dollar Index. Maybe more, but that's all I watch. This is real good in watching to see if a Stop is about to be hit.