Odd interface, but comprehensive
Don't you find that in the trading game, so many sites are years behind in good design. This one, ADVFN, and many others look like some schoolboy effort from 1998. But it does the job. Personally, I find the free tools from CFD providers and stockbrokers to be more than sufficient, but I do like this one and barcharts.com. US-centric of course, but I tend to play US markets anyway, mainly because larger liquidity leads to tighter spreads and smaller margins, and because of stocktwits.com and seekingalpha.com.