
Has all the options to create a good keyword research for any niche. Has easy and quick access to suggestions, quick add to list and export.
Also has a cool feature where you can enter a domain and see the SEO ranked keywords and the paid SEM keywords used (works only on domains with significant traffic though).
I really like the possibility to see 12-month trends for every keyword and data per location, city or country.
Contains 5 other tools for SEO and SERP monitoring that I don't use personally.
I do mostly SEM and paid AdWords. I'm sure there are better software out there for SEM but this one gets the job done. Review collected by and hosted on G2.com.
The keyword suggestions often provides very irrelevant keywords. Review collected by and hosted on G2.com.