Moz
And of course we have Moz on the list. For SEO competitive analysis, this software gives you several different tools that you’ll want to use. Between tracking and analyzing how your competitor’s’ content ranks and for which keywords, and running campaigns to track your own performance to compare and contrast, you have lots of information to look at in here.
I’m sure there’s useful competitive intelligence in every area of Moz Pro, but I personally spend my competitor research time mostly in the Keyword Explorer (identifying competitors for certain keywords), Open Site Explorer (analyzing your competitor’s site), and Fresh Web Explorer (one-off searches for mentions of things I’m not monitoring in Mention).