Top 10 Best Keyword Researching Tools For Free

10 Best Free Keyword Tools

1. SERPS -                                          https://serps.com/tools/keyword-resea... 
2. Keyword Shitter –                  http://keywordshitter.com/ 
3. Keywords Everywhere -    https://keywordseverywhere.com/ 
4. Answer the Public -               http://answerthepublic.com/ 
5. Keyword IO -                             https://www.keyword.io/ 
6. SEO Book -                                   http://tools.seobook.com/keyword-tool...
7. SEO Chat –                                  http://tools.seochat.com/tools/sugges... 
8. SEO Stack -                                 https://chrome.google.com/webstore/de... 
9. WordZe -                                       http://www.wordze.com/ 
10. LSI Graph -                            http://lsigraph.com/

Paid Tools & Free Tools

Best Keyword Research Tools 2018:

1. SEMRush (Premium) (30 days free trial) ...
2. Ahrefs Keywords Explorer (Premium) ...
3. Google Keyword Planner (Free) ...
4. Long Tail Pro (Premium) ...
5. UberSuggest (Free) ...
6. KWFinder (Freemium) ...
7. Serpstat (Paid)

I use these less than the others but they are still useful. 

Uber Suggest - https://ubersuggest.io/ 
Soovle - http://soovle.com/ 
Bing - http://www.bing.com/toolbox/keywords (must have a webmaster account)

As I mentioned in the video I also use SEO Book’s keyword density tool a lot. 
http://tools.seobook.com/general/keyword-density/