I like that this is not just for technical analysis, but also incorporates fundamental analysis into its data sources to give you more than one way to look at your investments. It's easy to use, has many charts available, and allows free access to several different types of indicators. There are some problems with their website layout - it sometimes takes longer than necessary to load. Also, in certain cases, there may be no chart for an indicator you're looking up.
However, these issues canβ¦