Which keyword research tool is best and free for searching targeted keywords?

I prefer Google adwords keyword tool and free keywords wordtracker tools for keyword research.

As per me Google adverse is best option, here you can find more relevant keywords with global searches, you can also use google suggested keywords in your site.

For keyword reasearch i use keyword suggestion tool from google.

If you want to free keyword  research tools then search on internet. Internet provide lots of paid and free keyword research tools. I am always use google adwords for keyword research. It is the google best tool. 

i think google keyword tool is best free tool for keyword research

Google's keyword search tool is definitely the best one I have use.

I always choose wordtracker for keyword research. The Keyword Research Tool will help you research appropriate words and phrases to include in your webpage's body text to promotion.

I agree that there are loads of keyword tools online... the best one are free - like Google keyword tool.  But what if you could get a keyword list that is proven to yield 300% more traffic than any keyword tool?

Forget traffic... Lets talk profits....
How about reverse engineering upto 96% of your competitor's profit keywords?

Keyword Country does all this for me!

I think Google  keyword tool is the best tool for selecting keywords through this tool we can easily make the right selection of our website keywords.I always use Google keyword tool because I think that It is more accurate than other tools.

Google adwards is best tool for searching keyword.

i used google keyword tool and it is best according to mine.

i always use "Google adwords keyword tool" for keywords research.

Google adword tool is best you also can use 30 days trail of seomoz or seosheer these are also good!

Google Adwords is the best tool used for keyword research. Most of the people use the same

google adword keyword tool is the best free keyword tool for researching the best keywords

Google adword is the free keyword research tool...

Well, according to me Google Keyword Tool is the best. Because if you are looking for keywords regarding SEO then you can sort out keywords by searching from Google Keyword Tool by its Global Monthly Searches, Local Monthly Searches, Competition, etc..
So According to me Google Keywords Tool is the best way to research keywords.

I thing "Google Keyword Planner Tool" is best keyword research tool

google keyword tool  is the best one

Keyword research tools are mainly required to purchase to get the best keywords. However, some tools are free to use, like:
1. Google Keyword Planner
2. Moz Keyword Explorer
3. SEMrush Keyword
4. Ubersuggest
5. Google Trends
Among the given tools, Google Keyword Planner is one of the most often used to get the best results.

There are many different keyword research tools available on the market, but not all of them are free. Here is a list of some free keyword research tools that can be used to help you find the right keywords for your website or blog:

1. Google AdWords Keyword Planner - This is a free keyword research tool provided by Google. It allows you to find the right keywords for your website or blog based on your country, language, and product or service.

2. Bing Ads Intelligence - This is a free keyword research tool provided by Microsoft. It allows you to find the right keywords for your website or blog based on your country, language,

-Google Keyword Planner
-Google Trends
-Ubersuggest

The Best Free Keyword Research Tools 
Moz Keyword Explorer The best all-around free SEO keyword research tool
Google Keyword Planner for Paid Keyword Research
Semrush for Advanced SEO Professionals
QuestionDB for lookup of keywords based on questions
Jaaxy for Affiliate Marketers
Keyword Surfer Browser Extension for Free SEO Keyword Research

Google keyword tool is the best one

Keyword Surfer.
AnswerThePublic.
Keyword Sheeter.
Keyworddit.
QuestionDB.
Ahrefs Keyword Generator.
SEMrush Keyword Magic Tool.
Ubersuggest.