9 Best Keyword Research Tools for SEO in 2021


best keyword research tools for seo

Check out 2021 Surefire Keyword Research Tools for SEO and become a master of keyword research who knows exactly where to rank the keywords, which keywords are easy to rank, and which keywords are used by your competitors.

Some might be asking: Does SEO keywords so important? Of Course! Keywords for SEO help your website attract organic traffic. And what is organic traffic?

Organic traffic means FREE traffic! So in other words, if you have lots of organic traffic, you can SAVE your money on advertisements and still potentially get new leads and customers.


1. Ahrefs

Ahrefs is one of the most highly recommended SEO tools in digital marketing. It’s one of the largest website crawlers, second only to Google.

Ahrefs’ Site Audit feature is the best SEO analysis tool to help SEO experts examine a page performance before performing large-scale search engine optimisation (SEO) or starting a website redesign or revamp.

You can generate keyword ideas in Ahrefs’ keyword explorer by simply typing a keyword into the search box. Then you’ll see a long list of keyword suggestions.

Ahrefs Keyword Explorer preview

To help you better understand your competitors, Ahrefs also offers competitor analysis to help marketers see the keywords your competitors are ranking for. You can then create new content to target the keywords related to those subjects.

Another useful competitive intelligence feature provided by Ahrefs is the ability to see new keywords and keyword movements in search queries.


2. SEMrush

SEMrush is an all-in-one SEO tool suite that can help you conduct keyword research and improve your SEO rankings.

semrush keyword dashboard

With the Keyword Overview Tool, you can enter keywords and get a complete picture of everything you need to know. It includes how many people search for that keyword every month (monthly search volume) in popularity, trending and more.

The Domain vs Domain analysis allows you to easily compare your website to your competitors, one of the most popular features of this SEO tool. You can compare keywords and domains if you’re looking for analytics reports to better understand your website’s search data, traffic, or competitors.

The On-Page SEO Checker tool is one of the features I like most. It allows me to easily monitor a website’s performance.


3. Ubersuggest

Ubersuggest is a free SEO tool from Nail Patel that offers search volume data, keyword suggestions, an idea of how difficult it will be to rank for your chosen keyword (keyword difficulty), and more.

With Ubersuggest, you can view a table of the top 100 Google results for a keyword with estimated visits, number of backlinks, domain score, and the total number of social shares.

Ubersuggest preview

If you are struggling to come up with content ideas, you definitely should try Ubersuggest’s Content Ideas feature for insights and ideas. It shows content related to your keywords, listing the estimated monthly visits, backlinks, and number of shares on Facebook and Pinterest.

You can sign in to Ubersuggest with your Google account to get more keyword suggestions, daily ranking tracking, and personalised SEO suggestions. If you are looking for a freemium SEO tool suite, Ubersuggest is one of the best options.


4. Google Keyword Planner

Google Keyword Planner was designed for advertisers who run ads on Google. However, we can use it as an SEO tool to understand keyword search volume, bidding, and more.

You have to create a Google Ads account to access this tool. Then you’ll have access to the Keyword Planner.

Type in any keyword you want and view the data for its monthly searches. You will also see a long list of keywords related to it when you scroll through or download the report.

Google Keyword Planner

You also can type in your competitor’s URL to find the keywords they’re targeting. Check out the bidding cost for these keywords to learn the keyword difficulty with search volume.

If they have a high price and a high search volume, then they are strong enough keywords to bring traffic for you if you can outrank your competitors


5. Google Trends

Google Trends is a free tool from Google that provides useful data and graphs showing the popularity of specific Google and YouTube searches.


It provides not only information about a keyword but a great insight into trends surrounding the topic, which can be invaluable at any stage of a company’s growth.

Search for keywords in any country to get information such as top queries, rising queries, interest over time, and geographical locations based on interest.

You can choose the country for interest data, related topics, and related queries. It will help you produce a trending post that catches people’s attention and plan seasonal promotions or campaigns matching the trends (a non-SEO marketing strategy).


6. Keywords Everywhere

Keywords Everywhere is an SEO Chrome extension that collects data from various SEO tools such as Google Analytics, Search Console, Google Trends and more to help you find the best keywords.

It helps marketers find the best keywords for their websites and the keywords used by their competitors.

Keyword Everywhere google result screenshot

When search your competitor or keywords, the related keywords will appear directly in the right-side panel of your SERP. The panel also shows what’s trending on Google and YouTube in a trend chart.

For businesses that focus on YouTube advertising, Keyword Everywhere is the best choice for you to see YouTube insights and YouTube tags to create better-related videos that follow the trends.


7. Keyword Surfer

Keyword Surfer is another tool like Keyword Everywhere. While you won’t find the same range of data as Keyword Everywhere (such as cost per click and competition metrics), Keyword Surfer does provide the search volume for your query and related searches based on your location.

SEO Surfer Keyword Research Tools

You’ll get a quick overview of the estimated search volume, number of words, and keyword targeting for each of the websites on the SERP.


8. SpyFu

If you are more focused on competitor analysis, SpyFu is one of the best tools for analysing how your competitors use their SEO well.

SpyFu is designed for businesses to understand their competitors by analysing their profitable keywords, PPC research, backlinks, and more.

Spyfu preview

Try it out for free without even logging in. Just type your competitor’s URL into the search bar, and the results will be generated for you. If you want to check more than one site, you can create a free account.

SpyFu is good for collecting past data from your competitors to understand their performances in terms of organic keywords, rankings, ad performances, backlink performances, and more.

It allows you to understand your competitor well, and you will definitely come out with the best SEO strategy to beat them.

Like Sun Tzu said, if you know your enemy, you need not fear 100 battles. Know your competitors well with SpyFu.

9. AnswerThePublic


AnswerThePublic focuses on keywords trends and searches queries. It presents keywords in either a nice visual format or normal data presentation to display keywords (either short-tail or long-tail) in five categories: Questions, Prepositions, Comparison, Alphabeticals, and Related.

You can type in the keyword you are looking for, and it will show the data in a list or visual format, or you can download a CSV file.

AnswerThePublic Sample Results

The keywords results from AnswerThePublic are usually based on the Google and Bing autosuggest/ autocomplete feature. It also shows what the content will rank for those keywords, and whether there’s a featured snippet for it.

It is a great tool for bloggers and copywriters to come out with related content even if they are on the free version. For those who perform keyword research on a regular basis and need more features, go for the pro plan.

Last but not least…

Certainly, not everyone has the time to research their keywords and manage their Digital Marketing. Exabytes offers professional managed SEO and Digital Marketing Services that help companies get top rank on Google.

Feel free to get in touch with us. Consultation is free.


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