The two popular ones I am aware of are Coinigy and Tradingview. I like Coinigy, but it lacks certain features I would like to see. Tradingingview seems to be the one most people are using.

I don't know if you are familiar with MQ4, but I would love to see that platform allow for cryptocurrency trading. We will probably have to wait a while before that happens as most traditional brokers are not set up for Bitcoin trading.