Today , I will be listing the Best SEO Keyword research tools available online , its features. I hope this list will help you to do a Keyword research and to plan your SEO and Pay Per click project. This tool will help you to identify the Potential Keywords , Long Tail Keywords and you can plan your campaigns and seo accordingly. If you do a Proper Keyword Research then it will increase your Visitors , Conversions and Leads.

Below are the List of Free and Paid SEO Keyword Research Tool available Online

  • Google Keyword Planner : 
Google Keyword Planner is one of the best Keyword Research tool and this tool is the Combination of Old Keyword Planner and Traffic Estimator. Today for using Keyword Planner you have to register with Google Adwords. By doing a Keyword research with Google Keyword planner you can plan your SEO and PPC with the same set of Keywords

It is one of the best and My Favourite Keyword research tool that I used for my Company. Many Professional Bloggers use the SEMRush as their keyword planner tool. SEMRush is the SEO tool where it has the Option of Keyword Research. The Pricing Starts from $69.95
Hittail is the Long Tail Keyword Suggestion tool. It helps to identify the long tail keyword in your SEO Planning. The Opportunity in Long Tail Keywords is very high and it is the genuine question sor searches are done by user and it can lead to high conversion and Lead. It gives you the Free Trail Version and if you are satisfy with it you can upgrade with your Plan Starts from $9.95
  • WordStream Keyword Research Tool : 
After Google Keyword Planner , this is one of the most use Keyword Research Tools used by the Professional SEO company and Professionals. It has Free and Paid Keyword Research tool
In Free plan you have the option search upto 10 Keywords upfront and Daily 1 Keyword you can search and you can Mail the Keyword research to your Email id.Wordstream claims it is easy , Fast and Accurate Wordstream Keyword Research tool which gives data from Google Adwords , Keyword for Website , Long Tail Keywords , Negative Keywords , PPC and SEO Keywords.
The Paid Version of Wordstream Keyword Research Tool starts from $249 . It seems it is little bit costly but I can say it is worth to try with it.
  • Ubersuggest :
Ubersuggest is the Free Tool and it is among the best Keyword Research tools available online and it is totally free. The Working of Ubersuggest is very simple , you enter the Keywords and in second it gives the Alphabetical and Numerical Variations for your entered Keywords. You can take the variations of this Keywords and use with Google Keyword planner to know the search volume.

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This are the list of Best SEO Keyword Research tools available online. If I will work on other Keyword tool ,then I will update with the same.