Where do you look for information on your industry, competitors and others?
Is there anything that is not present in the market that is important for you as a professional for decision making process?
My biggest tool when it come to industry competitors research is Google. It provides me info need. Other data sources like Euromonitor and so on also complement my effort, though cost some few dollars.
But at it comes to research on my competitors, then you have to choose between multiple tools depending on your needs. Similar web and other tools come in handy here.