One of the hardest things to do in keyword research is to uncover related keywords. With that in mind, the tools I’m reviewing today all help identify related keywords that you may want to search in more detail.
These tools are not a substitute for detailed keyword research like I talked about in my first series of articles. Rather, they may help to either identify those keywords that are most important to your competitors, or help find obscure opportunities where there may be little search volume, but there is also little competition.
All of the tools I reviewed for this article are free to the public. Some have paid options, but I’ve only covered the free features.
Source: Search Engine Land