Top 20+ Free Keyword Research Tools: Reviews & Comparison

Did you know that over 20 of the best free keyword research tools are a click away from your fingertips?

Yes, "free"! You read that right, and I’m about to go deep into every one of them and explore their strengths and weaknesses.

It is now clearer than ever that keyword research is the root of any thriving content marketing strategy and the fuel for the growth of e-commerce websites’ SERP ranking.

However, without the right tool by your side, the process can be aggravating and time-consuming.

Therefore, following extensive research, I rounded up the top 21 keyword planner tools with a free option to help you choose the right one for your marketing efforts.

a cover with the title that says "20+ Free keyword Research Tools with key features and comparison" with an illustration of a computer showing SEO and a girl working with her laptop on the right side of the picture

What is a Keyword Research Tool?

a picture with a blue background and a hand located on the left side and some pieces of puzzle words with the words like SEO, Trrafic, Ranking, Optimization, Keywords A Keyword research tool allows you to find relevant topics, seed keywords, and ideas that your target audience searches online.

whether you’re targeting paid search or focusing on your search engine optimization, you need to know your target audience's search intents.

When used correctly, keyword planning tools can boost your SEO efforts and improve your organic reach.

No matter what you need - whether it's monitoring high-volume search results, tracking your competitors' keywords, or checking out which factors affect SERP rankings the most, these tools have you covered.

What are the Best Free Keyword Research Tools?

This list of top keyword research tools will assist you in finding new seed keywords, optimizing your long-tail keyword list, and exceeding your competitors' page rankings.

Furthermore, these tools are designed equally for professionals and beginners, so no matter what level of expertise you currently have, you can certainly benefit from them all.

Take a look at the list and give them a try; they’re free after all! ;)

1. Google Keyword Planner

Google Keyword planner tool, Google Adwords  homepage with a title that choose the right keywords

The first free keyword research tool on our list is Google Keyword Planner (also known as Google Keyword Tool).

This free keyword planner provides accurate data and helps you go deep in your research process to find the most relevant keywords.

Keep in mind, though, to access the Google Keyword Planner, you need to have a Google Ads account.

The service gives you a report on the average monthly searches for a given keyword as well as new keyword suggestions and forecasts for their future performance.

Google keyword planner tool keyword report showing different long-tail keywords and their average monthly search

Here are the data the tool provides for each suggestion:

  • Avg. monthly searches.
  • Competition.
  • Top of page bid (low range).
  • Top of page bid (high range).

However, unfortunately, as you can see in the example above, it no longer provides exact monthly search volume data for all keywords and only displays a range of data.

Plus, the competition level provided by Google Keyword Planner is NOT always 100% accurate.

Yet, despite these drawbacks, the tool still has many great features and potential.

Aside from the service being 100% free, it can generate keyword ideas like no other.

As with all other Google products, this service is also super user-friendly (and there is a minimal learning curve). In any case, the best way to master this tool is to check out some video tutorials on Youtube and read more blogs about it.

  • Google Keyword Planner Pricing: 0$ / Free

2. Google Trends

Google Trends free keyword research tool homepagewith the title that says "Explore what the world is searching"is another handy tool you can use to explore data and analyze real-time and historical search trends locally or globally for free.

The only thing you have to do is enter search queries, and it visualizes the relative search popularity of a keyword over time.

Google Trends tool showing the visual data for 3 different keywords

You can customize your research process with Google trends by adjusting the:

  • Location (Country, Region, Worldwide)

  • Time (Hourly, Daily, Monthly, Yearly, Custom)

  • Category (Business & Industrial, Games, News, etc.)

  • Web Search Settings. (Image, News, Shopping, Youtube)

With these features, you can customize your research process spot hot topics and know if a trend is waning.

Since the tool uses primarily unfiltered samples of actual Google search data, it’s also a great source of inspiration for long-tail keyword searches.

Google Trends tool showing the related topics seed keywords and long tail keywords

You can also see the trending search queries & also check out the annual search history in the “Year in Search” section.

Overall, it's a GREAT tool for competitive analytics and finding out what's trending in your industry.

Whatever keyword research tool you use, you should always keep an eye on Google's trending topics, and where better to find this than on Google itself?

  • Google Trends Pricing: 0$ / Free

3. Ahrefs Keyword Generator & SEO Toolbar

Ahrefs keyword research tool homepage with a big headline that says "Free Keyword Generator"

Whether you’re a content strategist, market analyst, or SEO professional, Ahref is a one-stop destination for all your needs.

Ahrefs Keyword Generator is a free tool that gives you limited but accurate data based on your keyword and location, you set.

Using this tool, you can make smarter keyword decisions, considering that it gives you the keyword difficulty and volume on the related search terms.

Based on your seed keyword, the app provides you several relevant keyword ideas in both phrase match and question style.

Ahrefs free keyword generator tool showing Keyword ideas for "keyword research tools"

Additionally, if you're just starting with content marketing for your small business, the Ahrefs SEO toolbar extension is also an excellent starting point.

You can use this Chrome or Firefox toolbar extension for free to access the following features:

  • On-page SEO report

  • Redirect tracer with HTTP Headers

  • Outgoing links report with link highlighter and broken link checker

  • SERP positions

  • Country changer for SERP

However, if you’re looking for more advanced metrics for deeper insights, you can sign up for Ahrefs Webmaster Tools to get free limited access to Site Explorer & Site Audit.

Ahrefs Webmaster SEO Tool example showing related long tail keyword ideas about "Keyword research tools"

Some Ahreft users review G2 pricing as one of the downsides of the software since it may be out of reach for small and middle-sized companies.

But if you want to access advanced tools to _monitor competitors, identify the Parent Topic, and review the current SERP and ranking history of top-ranking results, you will need to purchase Ahrefs.

Ahrefs Pricing:

  • Lite: $99 per month

  • Standard: $199 per month

  • Advanced: $399 per month

  • Enterprise: $999 per month

4. WordStream Free Keyword Tool

WordStream free keyword research tool homepage with the logo of the tool and a section to enter the seed keyword and an orange call to action that says find my keywords

Next on my list, I present to you the WordStream Free Keyword Tool that helps you discover new keywords and analyze the performance of existing keywords.

The tool uses the latest Google search data to deliver accurate, targeted advertising ideas.

WordStream’s Keyword Tool provides hundreds of relevant keyword results, along with additional, actionable data such as competition level and estimated CPC, all for free!

All you need to do is to enter a keyword or a website (such as your competitor's homepage) to discover contextual keyword suggestions and ideas to help your business stand out.

Wordstream keyword research example showing resaults for "e-commerce marketing" seed keyword

By choosing the industry and country, you can put a step further and get industry-specific information and keyword analysis features to prioritize and maximize your marketing spend.

The tool offers keyword ideas, including:

  • Meta keywords

  • Keyword phrases.

  • Long-tail keywords.

  • Negative keywords.

  • PPC & SEO keywords

Overall, this tool is a good alternative to Google’s Keyword Planner since it provides PPC marketers with better, more detailed keyword information, including competition and cost data, tailored to your country and industry.

WordStream Pricing:

  • The platform offers several free tools & premium consulting / integration services at a custom fee.

5. SpyFu

SpyFu free keyword research tool homepage with a title that says "Our marketing revenue engine boosts SEO & PPC profits"

SpyFu is another free keyword research platform that you can use in your marketing research process to analyze your competitors’ SEO strategies.

The free version gives you limited but accurate data on monthly volume and estimated clicks along with similar keyword suggestions.

You can use the tool without even having an account and still get relevant data on:

  • Keyword Overview

  • Related Keywords

  • Advertiser History

  • Ranking History

  • Backlinks

  • Bulk Upload

  • SERP Analysis

  • Google Ads Advisor

SpyFu offers so much accurate & valuable data with its free keyword research tool.

SpyFu Keyword tool example showing data for "Image generation" seed keyword

The app collects past data, which enables you to see how your or your competitors' sites have performed against particular keywords in the past.

Its only downside is that the data is very limited in the free version, according to SpyFu users on G2.

You only get a snippet of the top organic and paid keywords for a website. Rest all is pretty impressive.

You can start using the tool for free and upgrade to the paid version as your needs change.

SpyFu Pricing:

  • Basic: $16/month

  • Professional: $36/month

  • Team: $149/month

6. Keyword Sheeter

Keyword Sheeter free keyword research tool homepage showing the keyword ideas tool

Keyword Sheeter is another free keyword research service that can generate thousands of long-tail keywords and hot topic search terms with just one click.

The tool can find keyword ideas using a semi-automatic Google search as a source, so you can extract thousands of keywords in a few minutes.

Whether an SEO expert or an SEO content writer, you can benefit from the keyword ideas that this app generates.

Keyword sheeter generating long tail keywords based on "email marketing" seed keyword

Additionally, Keyword Sheeter offers a filter for tweaking your location to find more specific results. It is also possible to filter the search results by asking the tool to exclude or add specific keywords or phrases.

But to use these advanced features, you need to upgrade your plan.

Despite its limitations, the free version is a good tool to get new ideas and start keyword research for free.

  • Basic Storage Email Your lists: $9 / month
  • Scale Search Volume: $90 / month
  • Starter Search Volume: $49 / month

7. Semrush Keyword Magic Tool

Semrush free keyword research tool homepage with a purple background and a section to enter keyword, domain or URL and an orange CTA that says "Start now" The Semrush Keyword Magic Tool provides limited access yet highly accurate keyword data.

The free version of this tool allows you to make ten queries per day, including Domain and Keyword analytics queries.

The tool features a robust filtering system that allows you to group keywords based on topics, search intent, question types, and SERP features.

Semrush keyword tool example that shows data, long tail keywords, keyword difficulty, volume and intent for the seed keyword "email marketing"

In addition, it includes metrics for keyword difficulty and competition.

Overall, according to Semrush users' reviews on G2, although the initial learning curve takes a while and the free version is limited, once you learn where to go to get what you need, it's game-changing and helps you work smarter, not harder!

Semrush Pricing:

  • Pro: $119.95 monthly

  • Guru: $229.95 monthly

  • Business: $449.95 monthly

8. Ubersuggest

Ubersuggest free keyword research tool homepage with orange theme and a section that asks users to enter keyword or domain for search and a CTA that says "search"

Ubersuggest is a free tool from Neil Patel, a marketing guru, which provides data on search volume, keyword suggestions, and keyword difficulty.

Like most keyword research tools, Ubersuggestl also starts with a seed keyword and generates numerous suggestions based on your target.

The tool offers an overview of the top 100 Google results for that keyword, with estimated visits, a number of backlinks, domain score, and total social shares.

Ubersuggest keyword tool example that shows the data such as search volum, SEO difficulty, paid difficulty and cost per click for the seed keyword "Shopify"

Even though you can use Ubersuggest without having an account, you can get more keyword suggestions, daily rank tracking, and personalized SEO suggestions if you sign up.

Moreover, UberSuggest comes with a Chrome extension that can help you speed up your workflow and be more productive.

Ubersuggest also offers advanced features in its paid plans, which according to reviews on G2, are relatively expensive for beginners.

On the other hand, compared with the other keyword research tools on this list, it's a budget-friendly option.

Ubersuggest Pricing

  • Individual: $12 USD/ month

  • Business: $20 USD/ month

  • Enterprise: $40 USD/ month

9. BuzzSumo

BuzzSumo free keyword research tool homepage with a blue background and a title in big fonts that says "Find the content that performs best Collaborate with the influencers who matter"

BuzzSumo is another incredible tool with a free plan for dominating your competition & tracking your key influencers.

This tool helps you grow your brand and reach new heights with its powerful keyword discovery, competitor tracking, and measurement tools.

The tool is an alternative to Ahref or Semrush that helps you find trending topics, check long-tail keywords, and figure out your content gap.

The app offers a free version with limited access to 10 free searches per month, but if you want to use more advanced features without limits, you can upgrade.

Plus, according to BuzzSumo reviews on G2, the only drawback is mostly a matter of price. It’s alright if you're established, but painful when you're just getting revenue streams in.

BuzzSumo Pricing

  • Free plan: $0 with 10 free monthly searches.

  • Pro: $99 / month

  • Plus: $179 / month

  • Large: $299 / month

10. Soovle

Soovlefree keyword research tool homepage displaying the logo of search engines like Yahoo, Google, Bing and platforms like Youtube, Amazon with a section looking lioke google search to add the seed keyword Another free keyword research tool is Soovle, a user-friendly and handy solution that collects search suggestions across up to 15 different engines, including Google, Bing, Wikipedia, Amazon, eBay, Youtube, and more.

This tool allows you to find the untapped keywords that your competition doesn’t know about, which helps to drive more organic traffic to your e-commerce website.

The best part is that you can easily save your favorite keyword ideas with Soovle’s “drag & drop” saved suggestions feature.

In addition, you can download your targeted keywords to a CSV file with only one click.

Soovle Pricing: 0$ - Soovle is 100% free.

11. AnwerThePublic

Answer the public free keyword research tool homepage with a section on top to choose the keyword, choose the country and the language

AnwerThePublic is a free visual keyword research & content ideas tool that scans what people are searching for on forums, blogs, and different social platforms and then turns those questions into long-tail keywords.

Answerthepublic Keyword research tool example showing resaults for seed keyword "e-commerce"

With millions of searches in its database, this tool will predict what your users going to ask based on the seed keyword you provided.

Additionally, AnswerThePublic generates suggestions based on prepositions, such as "like", "versus", "with," and "without", and also offers an alphabetical search that adds letters to the original query, displaying the most common queries using the letters selected.

Answer the public showing 35 questions for e-commerce newsletter seed keyword

It’s a great tool in times of mental block, but the free version only gives you up to three searches a day. So use it wisely!

AnwerThePublic Pricing

  • Monthly: $199

  • Anuall: $79

  • Expert: $19

12. Keyword Surfer

Keyword Surfer free keyword research tool homepage with a dark purple background and a title that says "Chrome Extension for Content and Keyword Research"

Keyword Surfer is a free Chrome extension similar to Ahrefs SEO toolbar that shows estimated global, and monthly search volumes for any query typed into Google.

Keyword Surfer extention data performance result in the Google search page

Using this chrome extension, you can see the search volume, the cost per click, and the estimated traffic of your competitor's pages, as well as a complete list of keyword ideas with overlap score and search volume.

Keyword Surfer extention example in the google search result showing data about the seed keyword "holiday"

Currently, with the free plan, you can optimize and track 1 website and get accurate SEO insights ‍every 28 days, which is quite useful.

While the free version is ideal for those who are just starting a website and want it to snowball, you can upgrade if you need advanced features.

  • Keyword Surfer Pricing

  • Basic: $49 / month

  • Pro: $99 / month

  • Bussiness: $199 / month

13. Moz Keyword Explorer

MOZ free keyword research tool homepage with a title that says "Meet Keyword Explorer" with a section to enter a URL or keyword and a yellow CTA that says "search keywords now"

The Moz Keyword Explorer provides an easy-to-use keyword recommendation tool that is ready to use at the click of a button.

While this keyword research tool offers only 10 free queries per month, its accuracy makes it an excellent resource for research.

Moz can help you understand how people are finding your website and how to make the most of keyword opportunities and drive organic traffic to your website.

MOZ Keyword research tool showing data like keyword difficulty, organic CTR, Keyword suggestions and SERP analysis for the seed keyword "video marketing"

It's as simple as entering your target seed terms and generating more ideas, filtering by metrics, and building lists.

Give it a try and discover how much fun keyword research can be.

Moz Pricing

  • Pro $79 per month if paid annually or $99 if paying month-to-month with the option to do a free 30-day trial.

14. KWFinder

KWFinder free keyword research tool homepage with a title that says "Find long tail keywords with low SEO difficulty" and a section to add a keyword or domain and set the location to search KWFinder is a great keyword research and analysis tool developed by Mangools - a developer known for its best-in-class tools.

Although this tool no longer offers free options, it makes our list because it offers a 10-day FREE trial with strong keyword analysis features.

KWFinder Keyword research tool example showing data and long tail keywords and SERP overview for seed keyword "gamification" KWFinder also offers multiple research options for unique keyword opportunities that can boost your process.

Consider taking advantage of the free trial of this tool if you're in the process of acquiring one.

KWFinder Pricing

  • Mangools Basic: $29 / month

  • Mangools Premium: $44 / month

  • Mangools Agency: $89 / month

15. KeywordTool.io

Keyword tool homepage with a title that says "Find Great Keywords Using Google Autocomplete" and a section to add the seed keyword and an option to choose the platforms such as Twitter, Youtube, Google and Amazon using their logos

Keyword Tool is another free keyword research option you can use its comprehensive database without even creating an account.

The software extracts keyword suggestions from Google, Youtube, Google Trends, and other social platforms like Instagram or Twitter and presents them to the user.

keywordtool.io Keyword research tool example showing total keyword data for seed keyword "popups" and asking the user to upgrade to see the full details

Overall, the search volume is dynamic, fast, and accurate and can generate alphabetically any keyword before the seed (main) keyword.

On the other hand, in the free version, the keyword volume and difficulty are no longer displayed, and you're prompted to upgrade to the pro version.

Keyword Tool Pricing

  • Pro Business: $199 / month

  • Pro Plus: $99 / month

  • Pro Basic: $89 / month

16. Keywords Everywhere Extention

Keyword everywhere free keyword research tool homepage with a title that says "Keyword research on the go" and an illustration of woman working with a laptop standing next to the google search resault page on the left side of the picture Keywords Everywhere is a freemium chrome extension and firefox add-on that you can use as an alternative to Keyword Surfer or Ahrefs SEO toolbar.

The tool shows you monthly search volume, CPC, competition & 12-month trend data on 10+ websites.

Keywords Everywhere extention example showing long-tail keywords for seed keyword "Keyword tools"

Just search a keyword, any keyword, and it gives so several related keywords, people also asked suggestions and even long-tail keywords together in one search result.

And the best part is that you can copy or export each piece of data separately, only with one click.

Keywords Everywhere tool extention example on the Google search result showing related keywords for seed keyword "Keyword tools"

However, you need to purchase credits to see monthly search volume, CPC, competition & trend data.

Paid users also see the historical search volume (from 2004) and the trend chart.

Keywords Everywhere Pricing

  • $10 with 100,000 credits

  • $50 with 500,000 credits

  • $100 with 1,000,000 credits

17. QuestionDB

QuestionDB free keyword research tool homepage with a blue background and a title that says "Uncover Your Audience's Questions" and a section to add the seed keyword

QuestionDB scrapes questions from all across the web, including sites like Reddit, Quora, and Stack Exchange— all of which have a wealth of information on the topics they cover.

With the help of smart algorithms, QuestionDB stores questions asked online in a database according to different categories and associates them with words that can be used to retrieve them.

QuestionDB Keyword research tool example related questions based on the seed keyword "Shopify Store"

This way, you can gather huge chunks of information regarding a single word.

Utilizing this free tool, you can create content ideas, track what people are talking about outside of the Google search bar, and get more context for how you might talk about a particular subject.

QuestionDB Pricing

  • Free: $0 with a maximum of 50 results per search.

  • Pro: $15/month with 500 searches/month

  • Agency: $50/month with 5000 searches/month

18. Keyworddit

Keyworddit free keyword research tool homepage with a section to add the seed keyword and an orange CTA that says "Get Keywords" on the top and the Frequently Asked Questions section on the bottom of the page

Keyworddit is another free tool that generates keyword ideas from Reddit.

With just one click, you can search for up to 500 keywords from thread titles and comments on a subreddit.

This tool is an excellent starting point for those who know little to nothing about a niche.

Keyworddit Keyword research tool example showing related keywords for the seed keyword "marketing" In addition to keyword ideas, the tool offers estimates of US monthly search volumes for each keyword.

As a result, you can get a better idea of the popularity of each subtopic.

If you're having trouble coming up with new blog post ideas for your blog post, you can just paste relevant keywords from Keyworddit into a tool like Keyword Sheeter or Ahrefs' Keyword explorer, and voila - your ideas are born!

Keyworddit Pricing: 0$ - Free

19. Serpstat

Serpstat free keyword research tool homepage with a blue background and a title that says "The growth hacking tool for"

Serpstat is another option on our list that displays the search volume, competition, CPC, and keyword difficulty for the keyword you enter.

Although the keyword difficulty may not be as accurate as it might be (KWFinder or SpyFu are more accurate alternatives), it can still provide a sense of how competitive a keyword is.

Serpstat Keyword research tool example showing keyword volume, CPC, PPC and Keyword difficulty for the seed keyword "Gamification"

In addition, Serpstat provides a competitor in ads and a graph to show how closely related domains are.

There is a limit to how many searches can be conducted per day with the free version, but you can try it and decide if it's worth upgrading.

Serpstat Pricing

  • Lite: $69/mo.

  • Standard: $149/mo.

  • Advanced: $299/mo.

  • Enterprise: $499/mo.

20. Jaaxy

Jaaxy free keyword research tool homepage with a text on top of the page that says "Billions of Keywords at your Fingertips" and a picture of a laptop in the background

The Jaaxy keyword tool is an excellent resource to help you analyze billions of keywords with accurate traffic and competition insights.

Using Jaaxy, you can analyze traffic, competition, and domain insights free of charge but with limitations.

The free trial offers a limit of 30 keyword searches with 20 search results.

Jaaxy Keyword research tool example showing data for seed keyword "email marketing"

The best part is that Jaaxy makes it easy for you to join and feature affiliate programs on your site.

By selecting the Affiliate Programs tab and entering your keyword, you will be presented with a list of affiliate programs that are sourced from Commission Junction, Link Share, Digital River, and ClickBank.

Moreover, Jaaxy also shows you the listed commission and Alexa Rank for each program and associated product website.

Jaaxy Pricing

  • Starter Trial: $0 with 30 Keyword Searches

  • Pro: $49/mo

  • Enterprise: $99/mo

21. SEO PowerSuite Rank Tracker

Powersuite free keyword research tool homepage with a title in green color that says "All Keyword Research tools in one" on the top of the page while showing some screenshot of the tool in the bottom

Last but not least, we have come to the last free tool on our list, the SEO PowerSuite Rank Tracker.

SEO PowerSuite supports all search engines and offers unlimited sites, keywords, and backlink tracking, and the best part is they are all free.

The Rank Tracker feature allows you to track keyword rankings and conduct smooth keyword research.

Since SEO PowerSuite is a desktop app based on Java, it is not as fast as web-based SEO tools.

Overall, SEO PowerSuite reviews on G2 indicate that it is comprehensive and allows for precision and accuracy in keyword research due to its filtering functionality.

Aside from that, the Ranking section enables you to view in detail the placement of your pages on your site easily and immediately.

SEO PowerSuite Pricing

  • Free SEO PowerSuite: 0$ with unlimited keywords to track.

  • SEO PowerSuite Professional: $299 per year

  • SEO PowerSuite Enterprise: $499 per year

Final Words…

a laptop screen that says "SEO keyword tool" with a CTA that says "enter" and hands typing on the keyboard

I know that's a lot of information to take in, so I've tried to boil it all down for you.

All these tools can be used in multiple ways, but the fact that they are all free makes them even more valuable.

Yes, SEO is a never-ending job. But these tools can help you with your day-to-day tasks and sharpen your SEO skills.

The best keyword research tool is the one that will make your job as an online marketer easier.

If you’re just starting your content marketing journey, choosing one or two of the most popular options for your content initiatives can be tempting.

However, exploring some of the other options out there that could prove more valuable to you and your organization, in the long run, may be worthwhile.

As a final note, please be aware that the pricing of the aforementioned tools is subject to change with no prior notice, so if you plan to upgrade, you better check the pricing page for more information.

Now it’s your turn— Can you think of any other free tools that should be included on this list?

Let me know your favorite keyword research tools in the comments below, or share them with us on Twitter.

Frequently Asked Questions

What are the Main Features of Keyword Research Tools?

You should look for a keyword research tool that offers the following key features:

  • Search volume report.
  • Keyword density analysis.
  • Filtering system.
  • Advertising cost per click (CPC).
  • Competitive density data.

What are the Best Ahrefs Alternatives?

If you're looking for an alternative to Ahrefs, you can opt for Semrush, KWFinder, SpyFu, or Keyword Everywhere.

How to Start Keyword Research?

You should begin your keyword research process by analyzing your niche and competitors' performance, which is why keyword research tools with analytical features can be extremely helpful.

The following are some relevant blog posts that might spark your interest:

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