21+ Best Keyword research tools for SEO in 2021 (Including free SEO tools)

Keyword research tools for SEO is not Easy to Search But After Reading this Article You will easily define the best tool.

Have A Look At the Best Keyword research tools for SEO

  1. Ahrefs: SEO Keyword Tool
  2. SEMRush: Marketing SEO Tools
  3. KWFinder: SEO Keyword Tool
  4. Moz Pro: SEO Software
  5. Ubersuggest: Keyword Tracking Tool
  6. Answer The Public: Free SEO Tools
  7. SpyFu: Free SEO Tools
  8. Woorank: SEO Ranking Tool
  9. Majestic: Marketing SEO Tools
  10. Google Trends: SEO Checker Tool
  11. SEOQuake: Free SEO Tools
  12. Siteliner: SEO Analysis Tool
  13. Fat Rank: SEO Tools
  14. Keywords Everywhere: SEO Keyword Tool
  15. Screaming Frog: SEO Tools Online
  16. Serpstat: All-in-one SEO platform
  17. Bonus Tool: Incognito
  18. Seopoz.com:
  19. KWFinder
  20. GrowthBar
  21. Long Tail Pro
  22. Keyword Tool
  23. Serpstat

Best Keyword Research Tools in 2021

  • Ahrefs: SEO Keyword Tool

Ahrefs works majorly by researching the backlinks of your competitors and keyword ranking. With Ahrefs you can easily scan your website regarding any SEO issues and also monitor your website either on mobile or laptop. It is the best content explorer and quickly provides you with the winning keyword ideas which will surely elevate your website rankings to the top. You can start with a small trial at $ 7 or even subscribe to monthly or annual planners. Ahrefs has four different plans for you:- Lite, Standard, Advanced, and Agency.

  • SEMRush: Marketing SEO Tools

SEMRush is used for SEO, Content Marketing, Market Research, Advertising, and social media marketing. It helps you with the most trending tactics and unveils the strategies of your competitors. SEMRush was started back in 2008 with a mission to make online competition transparent and fair so that everyone gets equal opportunities to grow. You can try this website for free for one month. Later it offers you three plans:- Pro, Guru, and Business. You can subscribe to monthly or annual plans.

  • KWFinder: SEO Keyword Tool

KWFinder helps you to find the most suitable long-tail keywords for your website. The biggest secret of trending in 2021 is making use of long-tail keywords. The major features of KWFinder are you get the best keywords in bulk, search volume, and keyword metrics, and also offer a daily keyword planner. You can subscribe for 10-day free trial to know more about this online SEO tool. KWFinder offers you three different plans:- Mangools Basic, Mangools Premium, and Mangools Agency. You can get an annual or monthly plan along with various discounts as you sign in to their website.

  • Moz Pro: SEO Software

Moz Pro assists you to understand the needs of your customers, track your rankings, optimize your pages, and find link opportunities. It also provides you access to the community of Moz associates and SEO experts from all over the world. It was started in 2004 as a blog and was named as SEOmoz with the mission to provide more value to the customer rather than what they bought. Moz Pro offers a 30-day free trial for users to accurately understand their benefits. It offers four different plans:- Standard, Medium, Large, and Premium. You can get an annual or monthly plan along with various discounts as you sign in to their website.

  • Ubersuggest: Keyword Tracking Tool

Ubersuggest has 7 weekly plan that supports you get more traffic to your website. It allows you to compare your website with the top SEO pages, offers thousands of keyword suggestions, backlinks, and unique content ideas. It even lets you search keywords for specific platforms like google keyword, youtube keywords, Amazon keywords. It is the cheapest tool when compared with Ahrefs, SEMRush, etc. You are allowed to take 7 days free trial and later get the monthly or lifetime subscriptions. The amazing part is that if you don\’t like the tool or services there are 30 days money-back guarantee proposal as well.

  • Answer The Public: Free SEO Tools

Answer the Public is basically customer-oriented, it allows you to give a clear idea about what your customers want from you. It even notifies you about the latest searches done by your audience about your website and other related content. You can even create folders to save all your important researches and save your heart\’s content. It has both the free as well as the paid version ( update to Pro). You can update to Pro with three plans:- Monthly, Annual, Enterprise. Personal training is also provided on this platform along with video courses.

  • SpyFu: Free SEO Tools

The major features of SpyFu are SEO research, PPC research, keyword research, SEO Reports, Keyword rank checker, SERP research, and domain overview. It even compares you with your competitors and tells you about the points which your competitors follow but you don\’t. You can select from three different plans:- Basic professional and team. All these three plans are billed monthly or annually. It is risk-free, if you don\’t find it valuable then you can get cancel the plan and get your money back within the first 30 days.

  • Woorank: SEO Ranking Tool

Woorank helps to optimize your website, track keywords, crawl webpages, compare your website with your competitors. Woorakn also has a feature that guides you and provides you with the solutions to the sales team, marketing team, small business, data services, SEO agencies, and developers. You can get 7 days free trial when you sign up on their website. It has three plans for you Pro, premium, and enterprise. You are billed yearly or monthly. If you select a yearly plan you get 4 months of free usage as well.

  • Majestic: Marketing SEO Tools

Majestic works majorly with the backlinks and compares your website with the other websites which have similar content. Majestic SEO was created in 2004 by Alex in the UK, later in 2014, its domain name was changed to magestic.com. It helps various SEO\’s, new media specialists, online marketing experts, and affiliate managers to uplit their business and brands to the upper levels. There are three plans for you:- Lite, Pro, Api Xl. In the API XL plan, the price may vary according to the analysis units you need each month and the number of users.

  • Google Trends: SEO Checker Tool

Google trends are the most powerful tool and it gives a clear idea about what is most trending and most appropriate for you. It helps you to understands the needs of your customers and helps you to attract large audiences. If you want to rank your website on top on google them do use google trends. It is updated every day according to the time and territory. If you are Indian but still want to target the American audience then it will let you know the trending keywords in America. You can use it free by just signing up with your Google account.

  • SEOQuake: Free SEO Tools

SEMRush and Be rush are the smaller projects of SEOquake. The standard feature of this online tool is that it provides external and internal links, compares URLs and domains, and best keyword density. It works with four different categories like SEO, marketing, PPC, and SMM. The plans are listed on SEMRush for membership. You can get 7 days free trial to understand this online tool in a better way.

  • Siteliner: SEO Analysis Tool

Siteliner assists you to find duplicate content and search the domains which are similar to your domain. You can even check your content on the site liner before publishing the content on your own website. Basically, it is a plagiarism checker tool. It also helps you to find the broken links or skipped pages during scanning your website. You can get free access to the site liner and it will allow you to check 250 pages once you sign up. You can also upgrade to a premium plan which will allow you to analyze 25,000 pages. 

  • Fat Rank: SEO Tools

Fat rank is a completely free SEO tool which helps you in link building and content creation. It is also available as a chrome extension rank checker. The major services provided by Fat rank are link building, blogger outreach, infographics outreach, local business citations, press release distributions, niche edits, multilingual outreach, media placements, etc. It also has a feature that provides you with no flow links which helps you to get the idea that such types of keywords are not trending. 

  • Keywords Everywhere: SEO Keyword Tool

The numerous keywords are filtered out to give you the most appropriate keywords by keywords everywhere. If you are just looking for the perfect keywords then keywords everywhere is the best one for you. It proffers you the keywords on the basis of search volume, cost per click, trending data, and competition. You can install it for chrome or Mozilla firefox. You can buy 100,000 credits, 500,000 credits, 1,000,000 credits, 2,000,000 credits, 5 million credits, 10 million credits for $ 10, $ 50, $100, $200, $500, $1000 respectively where 1 $ is equal to one keyword. The credits are expired after one year. You can also get the API Key for more benefits and features.

  • Screaming Frog: SEO Tools Online

The major feature of the screaming frog is Search Engine marketing, search engine optimization, pay-per-click management, link building, content marketing, social media marketing, analytics consultancy, and conversion rate optimization. Screamin frog has a team of people who are passionate to prove their clients the best of all the SEO tools. Screaming frog has both the free and the paid versions for use. The paid version is usually calculated by the number of users and varies accordingly.

  • Serpstat: All-in-one SEO platform

Within just a few clicks it allows you to find the key metrics of any website. The major services of Serpstat are on-page SEO parameters, domain analysis, and page analysis. You can install it as an app on your mobile, windows, or mac. It works as a mixture by providing you SEO, analyze competitions all over. Serpstat has 7 days free trial and a monthly subscription of $ 69.

  • Bonus Tool: Incognito

Incognito mode will give you an unbiased and proper idea about what your audience is searching for and what Google shows. In this mode your server is not tracked thus the results are displayed purely on basis of the ranking of the websites. You can write the various keywords to understand what your audience gets. It is completely free to use and available on all devices. You just need to know the various tricks in which this mode can be helpful for you.

  • Seopoz.com

Seopoz is widely used to obtain SEO reports and keyword ranking reports. It will let you the progress which your website has done and provides you the relevant suggestions to boost up your levels. You also get the data from google analytics and the search console. You can also use its free version but it has limited access. You only get 3 projects and 10 tracked keywords. The paid version has two plans: – standard and premium. In standard, you get 10 projects and 100 tracked keywords and, in the premium, you get 50 projects and 500 tracked keywords along with various other benefits.

  • GrowthBar

The features of GrowthBar are that it has billions of keyword ideas and difficulty scores, Competitive insights to boost your sales, AI-generated blog content in one click and is an all-in-one SEO tool. It also offers you 5 days free trial and three different plans: – Standard, Pro, and Agency on the monthly basis.

  • Long Tail Pro

Longtail keywords are the easiest trick to reach fastest to your audience. Most market professionals, SEO consultants, agencies, and affiliate marketers use this trick to elevate their brand\’s reputation. You can easily use the Longtail Pro by first enter the basic keyword to get the suggestions for your website. Then you can compare the keywords on the basis of search volume and select the most profitable keyword on the basis of the rank value. Long Tail Pro offers you three plans:- Annual agency, annual pro, annual starter. You can get monthly or annual subscriptions for any of these plans.

Why do we use Seo tools?

Using SEO tools contributes the following benefits: –

  1. It helps to speed up the SEO process. These tools help you to should list the specific ideas for your content from a long list. It also provides you the right direction and clear path to work upon.
  2. Working by yourself can be hard, so such tools are the best helping hands.
  3. The beginners are mostly trying to build up their own brand, so such SEO tools can help you to get success and built up your name faster and easily.
  4. These tools help you to get the more creative ideas and help you underside the ideas which don\’t work. These tools are direct pathways that convey to you what your audience wants from you and your brand.


All these SEO tools have some specialty in them so you should take the free trials for few days and then decide the best one for your website. Every SEO tool is the best and different in its own way. You need to understand each one and work with it for some time.

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