Best Tools for Finding Competitor Keywords
1. BuzzSumo
2. SEMrush
3. SpyFu
4. Ahrefs' Keywords Explorer
5. AdWords' Auction Insights
6. Crowdsourcing Keyword Research
7. Tag Clouds
8. WordStream's Free Keyword Tool
Competitive keyword analysis is one of the must-do things that every business has to follow. It should be a part of the strategy, not an afterthought. It will put you at a great advantage and you don’t have to be surprised about how your competitors are outsmarting you anymore.