20 Best Keyword Research Tools (Free and Premium)

Best Keyword Research Tools for SEO

The lifeblood of every website is the number of organic rankings it gets.

To get a massive traffic of organic link on your site,it's essential to play your cards right and tap into the never-ending stream of targeted traffic.

Ask any SEO, PPC, and content marketing expert about the different tools that could help establish a website flourishing with organic links.

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Rank 1 on Google with Technical SEO, 0.5s Pagespeed, UX SEO, Backlink SEO, Keyword Research SEO + WordPress SEO Training. A well organized, professional course that I recommended.

If you don’t have enough traffic on your website that should be the first indication that you are not using the keywords right.

You have content but it's not catering to the right audience at the right time to allow them to make a purchase decision.

Using a reliable keyword research tool can get you results you want to build a profitable online business.

With so many keyword searching tools, it’s hard to pick which one is the best. So, we have compiled a list of the best tools to help you find the keywords you need to boost your business.

Best Keyword Research Tools (Free and Premium)


1. KW Finder (Freemium)

KWfinder is a unique tool that works by using three different types of group ideas. It includes questions, autocompletes, and suggestions.

Data filtering is easier as compared to other tools.

Thanks to the accurately laid out search volume in an organic setup the KWFinder way gives you all the data that you expect.

KWFinder uses several tools, including Majestic and Moz, to determine the number of monthly searches for a keyword, find relevant related keywords, and define the difficulty in positioning.

Launched in 2014, the tool has improved considerably over the years and makes it possible to:

>to know the number of monthly searches for a keyword
>find variations of this keyword
>to know the difficulty to position oneself on a niche
>compare the metrics of the first 10 results

Kwfinder tool

Beyond the SEO point of view, KWFinder is a great tool for finding niche ideas and defining the keywords to work on.

This translates into relevant related keyword proposals, with a competitive score and the ability to analyze and compare the top 10 results of a given keyword quickly and easily.

pros

  • Free starter plan
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    Affordable monthly subscription
  • Easy to use interface
  • well-explained keyword difficulty score

cons

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    Agency plan is expensive 
  • Lack of competitor analysis tools

2. SEMRush (Premium – Available on a 30 day Free Trial)

SEMRush is the first marketing tool that was primarily focused on compiling keywords based on competitor based keywords research.

This useful keyword research tool gained popularity rather quickly when it was used coherently with digital marketing content and SEO based websites.

SEMrush seems to be perfect if you are looking for a tool that tells you:

Your positioning according to your keywords
Keyword suggestions
All inbound and outbound links to your site
The positioning of your competitors on their keywords and their SEO strategy
The health of your site via a complete SEO audit of your entire domain

semrush keyword tool

SEMrush has consistently demonstrated its expertise.

Thus, the tool that you can now have at your disposal has really been developed in order to present you in an intuitive, clear, while being detailed and professional.

SEMrush presents all the elements necessary for your SEO but also to monitor your e-commerce competitors and discover their strategy on the web.

pros

  • SEMrush has some of the most detailed and innovative SEO metrics available
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    SEMrush shows you all the keywords you rank for
  • Integrates with Google Analytics AND Google Search Console

cons

  • The free version is more for one-time tasks
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    Paid trial.

3. Ahrefs Keyword Explorer (Premium, free trial , 7$)

Ahref is the undisputed king when it comes to finding a keyword research tool to boost your business.

Putting Ahref at work shows its true potential, this fantastic tool is able to pull the most numbers of keyword suggestions.

The ability to pull the most keywords makes Aherfs way ahead of other tools. 

ahrefs tool

Ahrefs has a fantastic data filtering that helps you to sort an entire list of keyword suggestions based on keyword difficulty and search volume.

Ahrefs uses these metrics to give you better results by caching it in the keyword database. 

This is the only tool that uses three unique keyword metrics including clicks, return rates and clicks per search.

pros

  • In-depth SERP analysis
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    Accurate backlinks numbers
  • Advanced filtering
  • Keyword section includes clickstream data for more accurate

cons

  • Low limits and restrictions on the regular plan
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    Keyword suggestions do not have a relevancy sore
  • No integration with Google Analytics or Search Console

4. Long Tail Pro (Premium)

Long trial Pro is a premium keyword research tool that has many benefits. You can find the right keywords to help boost organic traffic for your blog or website.

It lets you find keywords that remain undiscovered by the best tools on the market.

It needs access to your Google Adwords account, once accessed, Long Tail Pro looks for keywords that you might have missed.

This is the best tool to use if you want unique keywords for the blog. It is one of the best keyword searching tools with hundreds of results.

The keyword searching is based on the search volume, the PPC competitiveness, and the top ten pages ranking on Google. 

pros

  • Easy to use 
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    Frequent specials available
  • Regularly updated
  • It offers you a ton of keywords for each seed keyword

cons

  • Not much better than free alternatives
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    No cloud access so far 
  • It is a bit slow as compared to its competitors

5. Google Keyword Planner (Free)

A part of the Google Adwords, Google Keywords Planner is a free keyword research tool that’s quite popular.

The best thing about Google Keyword Planner is that any new or seasoned blogger can use it to find the keywords related to their business.

The reason behind why Google created the Keyword Planner was to help Adwords users to look for keywords for bidding to increase traffic to their site. 

keyword planner tool

Using the Google Keyword Planner will allow you to have the most recent keywords because it’s a Google product.

The live URLs can be used to filter out the keywords that you can use to improve your 

I like to search for keywords by hand, analyze each one to see if it fits the clientele I'm aiming for.

The KeyWord Planner is flawed but its power remains immense. I also use it when I work on the semantics of my content.

PS.as advertiser , you will get more statistics. 

pros

  • It’s still free!
  • Volumes according to seasonality
  • Easy to use interface
  • Data comes directly from Google itself

cons

  • Mostly designed for advertisers
  • It takes time to find profitable keywords
  • No long Term Keywords
  • Keyword filters have been reduced

6. Keywordtool.io (freemium)

The Keywordtool.Io , which extracts Google's auto-suggestion results, offers a relatively extensive list of suggested keywords.

The free version can generate up to 750+ queries for each searched keyword. You can export the keyword generated.

The search is done on Google, Bing, Amazon, Youtube,  and the App store.  The search volume, the CPC and the keyword competition in Adwords generated keywords are in Pro version only.

Keywordtool.Io tool

Keywordtool.io works by using Google Autocomplete for generating relevant long tail keywords for your topic.

pros

  • It’s fast, easy & simple to use
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    It’s free to start with
  • Search for term Keywords using multiple platforms, countries & languages
  • 30-day money back guarantee

cons

  • The free version only allows you to view the keywords
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    A bit Costly 
  • Essential metrics are missing ( PPC or search volume )

Tip/Info

To decide what is the best keywords research tools depends on many criterias:

  • Search Volume
  • Difficulty
  • Competitors
  • CPC/PPC/SERF

7. UberSuggest (Free)

Ubersuggest is another great  free keyword research tool for beginners owned by  Neil Patel.

It helps you easily find a a number of keyword ideas.

ubbersugget tool

Ubersuggest searches by volume, SEO competition metrics,CPC, Negative keyword search and Related/lateral search. 

Briefly, this program is an awesome, legit option I can recommend if you’re looking for free ways to find great and even decent KeyWord ideas. 

pros

  • Still free to use
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    Fast and accurate results
  • Tons of keyword ideas
  • Provides search volume and CPC

cons

  • Doesn’t include features like keyword difficulty, competitive analysis so far. 
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    Does not support other useful APIs like Amazon

8. Moz Keyword Explorer (Freemium)

Keyword Explorer is a  keyword research tool by Moz.

Besides Difficulty and Volume, Moz Keyword Explorer provides a combination of all the keyword metrics to help in prioritizing things, how significant the keywords can be for the campaigns and relative CTR for the organic search results on SERPs.

Moz Keyword Explorer tool

Enter any keyword or phrase into their search bar, click enter, and you’re shown pretty much everything you need to know for your keyword research – Difficulty, volume, opportunity, potential, suggestions, analysis and mentions.

Moz Keyword Planner also provides a deeper understanding about why definite pages rank within SERPs as per the link as well as social data.

It will also help you in planning the SEO strategy further than keyword research.

pros

  • Provides useful SEO metrics
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    Intuitive interface  
  • Adding keywords to your list
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    Free Trial 

cons

  • Free version very Limited
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    Takes a long time to research each keyword
  • A bit overpriced

This  all-in-one tool contains four more modules covering Competitor Analysis, Site Audit, Backlink Analysis and Rank Tracking.

Serpstat shows you full list of search results for a keyword along with extra data such as: organic keywords, the number of Facebook shares, and the potential traffic score for each separate page.

serpstat tool

The Tool will also allow you to compare your keywords to different performance indicators, such as search volume, cost-per-click, competition level or number of search results.

Serpstat defines your online competitors as websites that rank in Google’s top 20 results for the same keywords as your website.

pros

  • Affordable SEO tool
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    The keyword tracking is great 
  • The clean interface 
  • Quality and on-demand support
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    Automated website monitoring

cons

  • Only few Google search databases available
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    It's not the most accurate in keyword difficulty and authority ranking of competitor websites

10. majestic

This is the ultimate backlink analysis tool. In particular, it indicates how many links and domains point to your website.

The notion of Trust Flow, unique to Majestic, is a note that indicates the level of "trust" of a site based on the reputation of sites that make links.

majestic seo tool

It also makes it possible to visualize the distribution and the types of anchors of a site.

Moreover, this tool also makes it possible to have a clear and fast vision of the themes of a site.

pros

  • Chrome extension available
  • Trust Flow and Citation Flow
  • Strong backlink indexing
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    Links are grouped into types

cons

  • Since it is not an all-in-one tool, many SEO features aren’t provided 
  • User interface is outdated and user experience just average

11. Screaming Frog SEO Spider

Screaming Frog is a "crawler" (web analyzer).

This tool, which is widely used by developers and marketers, identifies the entire structure of a page and its SEO characteristics.

In addition to analyzing the number of H1 and H2, Screaming Frog analyzes the incoming and outgoing links on the structure of the URL.

In other words, this tool is great for detecting errors that are detrimental to good SEO. It allows to review its website and bring it closer to the concept "Google friendly".

The SEO Spider is a desktop website crawler and auditor for PC, Mac or Linux which spiders websites’ links, images, CSS, script and apps like a search engine to evaluate onsite SEO.​

pros

  • Generous free version
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    Reasonable license fees
  • Detailed scraping of metadata from every single page
  • Integration with Search Console for detailed analysis of pages

cons

  • No cloud based option so far 
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    Limited in its free version 
  • The speed of crawls can be an issue if you have a large website.
  • Lack of Materials like videos/guides

This amazing tool will help you find hundreds of long tail keyword  in no time  with the amazing keyword research tool.

I will also allow you instantly revealing  the ranking difficulty and metrics for hundreds of keywords.

keywordrevealer

Identify keywords with high search volume and low competition, you can also check domain availability for each term as well, which you can apply  to your SEO strategy & start ranking on page one.

Another cool  feature about this tool  that is similar to LongTailPro is the keyword brainstorming  that helps you discover uncovered long trail keywords.

pros

  • It shows the keyword difficulty level (useful to decide if you should target a keyword or not)
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    It reveals  if EMD domains are available for each keywords
  • The interface at Keyword Revealer is easier to get started.

cons

  • Limit of  keyword searches per day in basic plan
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    Returned keywords for each focus keywords is less than competitors

13. Answer The Public (Free)

Appeared in 2014, "Answer the public" automatically extracts from a keyword Google's autosuggestions by associating them with questions or prepositions.

The interface of Answer the public is particularly successful, with HTML5 animation. The typed keyword shows questions related to the search keyword.

This tool is really innovative compared to the classic extractors of Google Suggest.

Answer The Public tool

pros

  • The tool returns questions that are actually asked to Google
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    The keywords proposed are not too numerous
  • Free to use 

cons

  • Visualizations are innovative but not good  in practice
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    Quite a few features

14. Keysearch

Keysearch shows  you more ways to find related, niche relevant keywords.

Just put in a seed keyword the tool will return a lot  of related keywords with search volume, CPC & PPC data.

This tools will refine your search with Keyword Planner, Google Suggest, Amazon Suggest, YouTube suggest finders and thier own huge database. 

You can also even put your competitors URL and have Keysearch grab keywords that your competitors are ranking for.

Which will  give  you a number of ways to search for hidden gem long tail keywords.

Keysearch will track your rankings & your domains authority stats automatically. You will even have the choice to get trackings down to your exact location.

Another cool feature is that you can group keywords, create reports, create notifications and get on demand ranking update.

keysearch.co seo

pros

  • Very reasonable price
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    Provides data on relative search volume by month
  • Added YouTube Research (Beta)
  • Responsive support ticket

cons

  • Limited number of searches per day
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    Somehow awkward interface
  • Slight delay when switching tabs
  • Limited capacity for rank tracker

FAQ: What is keyword difficulty?

It’s one of the major metrics while doing keyword research.

The higher the value, the harder is to compete with others in SERP using that keyword.

Be reminded  that it’s not the competition level in Google Keyword Planner ( for advertiser)

15. spyfu (freemium)

Awesome tool for getting actionable data on what your competitors, or your client's competitors, are doing online.

Having ppc data along with SEO data and keyword data in one app saves a ton of time doing research.

There are no limits to how many reports you can run, keywords you can add, the UX is incredible, and it's easy to find the information you are looking for.​

I also like that it has a keyword difficulty score for SEO purposes. 

The tool will allow you to track your ranking progress and impression share on your most important keyword groups. It will  suggest expansion keywords and actions to take.

The SERP reports were built with good visibility of ranking visibility, monthly stats, domain strengths and social score. You could also either download or export as a pdf document.

Spyfu SEO

pros

  • Great user interface
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    Depth of content reporting
  • Affordable pricing
  • Allows to quickly access information about relevant keywords and ppc history 

cons

  • The biggest issue is exporting graphs and charts. Only the data is exported. 
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    No web-wide crawling capability
  • Ad metrics can be confusing for a novice SEO user.

16. Keywords Everywhere ( Free )

Free Keyword search volume for 15+ websites like Google Analytics, Google Search Console, Moz, Majestic, YouTube, Amazon & more.

The Keywords Everywhere extension is a free keyword research tool that shows you useful google keyword search volume and cost per click data on multiple websites.

This tool saves you the hassle of copying data from various websites and using the google adwords keyword planner to see relevant search volume and cpc data.

I use Keywords Everywhere almost every day, especially when I want to find the SV/CPC/Competition of a small number of keywords

Keywords Everywhere

pros

  • Free - Value For Money
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    Ease Of Use
  • Chrome and firefox extension 

cons

  • Limited features 
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    Need other tool to get the big picture

PRO TIP :

When it comes to finding  keywords, the greatest tip you can get is to be patient and keep digging and digging.


The more you search and, the more you’ll uncover.

 

After you have collected all related keywords, organize them and develop your plan.

 

Optimize your site, and laten on  focus on your outreach plan.


Using these keywords, you will have the ability  to build the community that assists lead your site/blog to the right direction.

17. Soovle ( Free)

 is a free keyword research tool which aggravates all major search engines into one page.

This enables you to see all suggested searches from all major search engines (Google,Amazon, Yahoo, Bing , yahoo, WikiPedia and Answer.com )  by simply entering words into Soolve’s search box.

As you type into Soovle you will see suggested keywords appear for each of the various search engines.

This is  useful if you plan on marketing your content or brand on different platforms, such as listing your products on Amazon.

By seeing all suggested search terms in one place you can quickly get a good idea what search phrases people are using.

soovle seo

pros

  • Allows you to save your searches for later use.
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    Great source of ideas (for gifts using Amazon)
  • Free to use 

cons

  • If you type fast , Soovle may not keep up and may give bizarre and unrelated results.

18. SEOBook Keyword Suggestion Tool (freemium)

Super easy to use and giving all the information you need quickly (like monthly search volume, suggested bids ...). 

Just put your keywords into the  search box, and press submit.

You’ll get a table with related phrases, and US and UK monthly search volume.

You’ll also see daily search volume for Google and other search engines like Bing and Yahoo.

Click on any of the underlined numbers to go directly to the search engine page for that query.

Another free feature is that you can enter a competing URL to quickly gain access to their organic & paid search performance history , know exactly where they rank, pick off their best keywords, and track new opportunities as they emerge.

SEOBook Keyword suggestion

pros

  • Offers a CSV export option which allows you to export the data in the interface.
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    Links to Google Trends, Google Suggest, and other tools providing keyword research results.
  • Free to use 

cons

  • Don't expect precise quantitative analysis 
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    Most keyowrd databases consist of a small sample of the overall search universe.

19. LSIGraph (Freemium)

A free tool, LSI Graph helps you find LSI keywords that emphasize the optimization of your content.

Simply enter your keyword in the search bar and you will receive a list of LSI keywords that you can use.

Note that you do not have to use them all.

Think about the intention of your user. All of these keywords do not match your goals or the needs of your buyer, so filter them wisely.

What are LSI keywords?

LSI keywords are essentially keywords related to the keywords that you are searching for, and Google does this by using a system known as LSI (Latent Semantic Indexing). 

A lot of people think that LSI keywords are synonyms.

But this is incorrect. LSI keywords are simply words that are frequently found together because they share the same context.

LSIGraph tool

pros

  • Clear interface
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    Simple to understand and use
  • Free to use
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     Fast

cons

  • 3-searches daily limit unless you verify your account, 20 searches if you add your email
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    doesn’t do anything else other than suggesting keywords

20. keyword discovery

Keyword Discovery is a keyword research tool with a database of over 36 Billion search queries from over 200 search engines worldwide.

Access to search phrases that people use to find products and services, as well as the search terms that drive traffic to your competitors.

They offer keyword databases from different big sites like  eBay, Amazon, and other shopping sites, showing you products people want to buy.

You can also search keyword databases by  countries, such as the USA, Australia, Germany, the UK, Canada and others.

Keyword Discovery offers various keyword research options, like broad match search, competitors, thesaurus, phrase search and domain score search..etc.

One good cool feature is you can also search for spelling mistakes and typos, related keywords, industry categories inflected form.

Along with other features like adult filter, exclude keywords, keyword manager, plural search inclusion, and removing space searches.

Keyword Discovery

pros

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    Offers great Comprehensive Data
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    Simple and Easy to Use
  • Free Trial
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    Tutorial Videos

cons

  • A bit expensive Than Competitors

Wrapping it up

Whether Free or Paid, there is no dearth of Keyword Research Tools.

It all boils down to what stage of Keyword Research you are at?

If you are looking for advanced sliced and diced data… you may look for an advanced Paid tool. In the other case, a free, average tool like (Google Keyword Planner) will do a good job.

Before you zeroed down to a single tool, it is always recommended to have a go at options and features to see which one fits your requirements better.

Verdict:

There are a lot of keyword research tools available these days. It can become a quite time-consuming and challenging task to find the right tool when creating your content.

We have tried  majority of these tools before  and we can conclude that :

If you are looking for an easy and free solution then I recommend Google Keyword Plannerwhich I'm still using.

If you have a small budget, KWFinder is a long tail keyword research tool with a great interface. It shows you trend, search volume, CPC, and level of difficulty in results.

KWFinder also helps you dig into local keyword research – you can target your search results by city, state or country ..etc.

If you’re a professional and looking for advanced features, then you’ll want to get into a premium tool – SemRush. Agree, it’s pricey,  however the volume, accuracy of the data and competitive analysis would mean you’ll get a solid asset on your investment.

Update : another tools that we liked recently is KeySearch.

It is an affordable version of Ahrefs ( I wouldn’t say it is a better alternative to Ahrefs) , but it offers wat you will need in your and get the job done .

It will help you analyze competition and find keywords that are easy to rank for while saving you time. 

What other keyword tools would you add to the above? Share your opinions in the comment section down.

“Note: Some of the links mentioned above are affiliate links. That means, when you use those links to buy products, I earn a small commission at no additional cost to you. That way I can run my site for years to come. thanks in advance ”

KWFinder - find long tail keywords with low SEO difficulty