I was going to renew my subscription to Sierra charts but they are switching pay servers and are letting everybody use the full package until August 31 for those of you wanting to check it out with live data feed. Not that the cost is that much anyhow but free is always good.
I had Sierra Charts for awhile, it was really not bad at all for alerts based on technical analysis. And incredibly cheap. All my services are now blocked by this work firewall and I'm looking for a browser based charting service which shows pre- and post- market bars on NASDAQ issues, can't find one.