There is always a risk to use these trading tools and can cost you money if you do not know how to use. In the past I have tried many different tools but the results were not as expected and often made me lose money when participating.
I think in investing you should analyze and always research carefully before investing because there is no tool that can help you outside yourself in this market.
Almost evertyhing in this list is free. I don't know how people trade without some of this tools, for me it's impossible.