has clean free charting software you can modify to your own personal liking. You can choose background color, size and much more. These charts are community driven, so you can see other traders posted charts, share your analysis and much, much more.
I like TradingView because they are the best free charting software for technical analysis that give you some great scanning tools so you can find the best securities to trade at the moment.
You can also set alerts, a great way to remind you on securities starting to move or remind you of possible setups.