5 Best Keyword Research Tools For SEO_ 2021 Edition – Free _ Paid

5 Best Keyword Research Tools For SEO_ 2021 Edition – Free _ Paid

Keyword research is an essential step in SEO and content marketing that helps the audience to reach the relevant content. The keyword research tools is an online assistant that analyzes and finds appropriate as well as related keywords for the target word to be used in content marketing. 

Such tools are available in free and paid versions. The paid version of the keyword research assistance usually carries additional advantages and is also the recommended one for thorough research. 

Here are the top 5 such keyword tools that can help with finding the apt and most effective keywords for the online content that helps promote the work. 


SEMRush is one of the best keyword tools that are effective and useful for both beginners and experts. SEMRush tools are available as free as well as paid options. Though the free option has only a limited number of keywords and advantages, it is effective nonetheless. 

The toolkits are conveniently stacked on the left side and are easily accessible. It shows the keywords density, its ranks, ranking websites, etc. 

It also consists of the right tools to analyze the backlinks and their merits. It would show the toxicity level of a bad backlink so that website cleanup is easier. 

KW Finder

KWFinder is a paid keyword research tool that shows a detailed analysis of the target keyword at a low price. It does not have an extensive toolkit like the others but it is enough to find the ranking and related suggestions.  

Owned by Mangools, this keyword tool is available at 3 pricing options that allow a daily search limit of 100 to 1200 words, and the cap on related keywords ranges between 200-1500.

KWFinder is easy to use with a limited number of tools in its kit and the search is simple with a search box. It also allows filtering of the primary keyword before searching.  

Google Keyword Planner

This Google keyword tool is an ideal option for laying the groundwork for an online campaign. It helps build the list of some strong and effective keywords. It comes as a part of Google Ads. The Google Keyword Planner (GKP) is free to use within Google Ads. 

GKP shows the suggestions for Ad group, CPC, and the expected competition for that particular keyword, as well as its search volume.

But this is not an ideal option to find the long-tail keywords which are also essential. The keyword density option is also unavailable with this tool. 

Ahrefs Keyword Research Tools

Ahrefs is more of a site-specific search tool that also shows keyword suggestions and the basic management for the keywords. The wonderful advantage is the option of comparing the domains since it maintains a large volume of backlink index. 

This is a paid research tool that is available at a starting price of $82 to the advanced $332 per month. The research allocation for the plans is 300-4000 keywords. It shows local, global, and specific country search volume and analysis. The AdWord ads and snippets also appear from the SERP tool. You can set alerts for any new backlink addition, keyword position, or a new keyword, etc as well.  

Keywords Everywhere (Keyword Research Tools And Extension)

Keywords Everywhere is a Chrome extension and is more convenient for a beginner to do keyword research tools. This tool is available for free but would need a paid version to get extensive results. 

It shows the monthly results of the keyword density and CPC. It stays right there on the search page and shows the results along with the keyword in the search box. 

The results could be filtered according to the target country and language.


If you are a bit tight with the budget then Keywords Everywhere and GKP would be the ideal options. If you are looking for wider and extensive research then the paid version of SEMRush and Ahrefs would be ideal.

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