8 Best Keyword Research Tools in 2021 [Free Apps Included]

Karen Maristani on August 9th 2021

Looking to find the best keyword research tools? With all the many options out there, we know it can be a bit daunting. Which SEO keyword tool should you get? Which is the best value for money? Which is the easiest to use?

If you’re looking for an answer to all the questions above, you’ve come to the right place.

In this article, we want to help you establish an online presence. That’s why we've compiled a list of some of the very best keyword research tools. We want you to start attracting a steady stream of traffic to your site. But first, what exactly is an SEO keyword tool? And what makes an impressive one?

Keep reading to find out all this, and more.

What is a Keyword Research Tool?

An SEO keyword tool can do many things. It can make finding blog topics easier, or give you all the data available to plan a powerful SEO strategy. With this information available in the palm of your hand, you can become unstoppable in growing your traffic.

You can explore words, topics, or website addresses to reverse-engineer some of the most-visited pages on the internet.

Best Keyword Research Tools

Here is our list of the best SEO keyword research tools:

1. Seodity: The best allrounder for advanced keyword research and competitor keyword tracking
2. SEMrush: The best tool for advanced SEO professionals
3. Soovle: The best free SEO tool for keyword ideas
4. Ubersuggest: The best for great data and free access
5. Ahrefs: The best keyword research tool for finding question-based SEO keywords
6. Google Keyword Research Tool: The best free SEO keyword research tool
7. Seobility: The easiest keyword searching tool to use
8. SpyFu: Best for small businesses

Let’s go through their features and pricing plans one by one. You’ll also find some tips on using specific features for generating new keyword ideas.

1. Seodity

Seodity is a great SEO keyword tool. It provides keyword suggestions, position tracking, competitor content analysis, and much more. The platform also offers many technical SEO features and on-site audits.

You can use this app to check keywords manually by URLs or topics—which is OK. However, you can also generate article ideas right away by typing in a list of your competitors!

To break it down, Seodity’s top features include:

• Keyword Research: Find the best keywords quickly and easily.
• Keyword Tracking: Track your ranking positions for specific keywords.
• Competitor Analysis: Identify your competitor's top websites so you can make informed decisions.
• Content explorer: Use this tool to find web pages with high estimated traffic volume.
• Google Analytics Integration: Track and understand your website's traffic even better.

Seodity Pricing

• Free trial: First, it's important to note that you can try out Seodity completely for free. And, with no credit card sign-up!
• Bronze: $29 per month
• Silver: $89 per month
• Gold: $149 per month
• Agency: $299 per month

2. SEMrush

SEMrush shares a ton of keyword data. It makes it pretty easy to dig into the details if you know what you're looking for! From standard traffic to content-driven keyword research, this SEO keyword tool can certainly impact your ranking.

Inside this SEO keywords research tool, you’ll find:

• Average monthly search volume
• Keyword difficulty
• Top competitors
• SERP features, like the number of rich snippets that appear for a particular query

Semrush Pricing

• Free trial: You can try Semrush free for 7 days.
• Pro: $119.95 per month
• Guru: $229.95 per month
• Business: $449.95 per month

3. Soovle

From super expensive to free, we have Soovle—a completely free keyword research tool. It suggests keywords from all the prominent providers in one place, including Google, Amazon, Bing, Youtube, and Yahoo.

What’s the catch? You won’t find search volumes and you cannot scrape keywords by entering a domain name.

4. Ubersuggest

Ubersuggest is more advanced than Soovle, but there is also one big catch—you are limited to 3 searches per day.

Ubersuggest Pricing

• Free trial: 7 days free trial with a credit card sign-up.
• Individual: $29 per month
• Business: $49 per month
• Enterprise/Agency: $99 per month

5. Ahrefs

Ahrefs allows you to come up with ideas by simply typing your keyword into the search box. This useful feature helps you find matching terms, including questions that people would search for on Google.

Ahrefs Pricing

• Trial for $7: for 1 week, but it can only be activated on the Lite and Standard subscription.
• Lite: $99 per month
• Standard: $179 per month
• Advanced: $399 per month
• Agency: $999 per month

6. Google Keyword Research Tool (free)

The Google Keyword Planner is a useful tool for building organic SEO. Once you’re in, follow the very simple steps to discover new keywords which include average monthly search volume and competition.

7. SEObility

Seobility is one of the easiest tools for keyword research in the industry. This is among the best SEO keyword analysis tools for beginners because the software is designed with a clear focus on ease of use.

Seobility Pricing

• Free trial: A free trial is available for 30 days on the premium subscription.
• Free: $0 per month
• Premium: $39.90 per month
• Agency: $149.90 per month

8. SpyFu

SpyFu is an intelligent platform that provides a wide range of features including search data, rank tracking, and backlink analysis.

SpyFu Pricing

• Free trial: No free trial available
• Basic: $39 per month
• Premium: $79 per month
• Team: $299 per month

Which keyword research tool is the best for me?

So, there you have it—8 of the very best keyword research tools available in today's content marketing world. To conclude, let’s check out which keyword search tools are perfect for your business.

Best SEO keywords research tool for in-depth search & competitor tracking: Seodity

Seodity is truly the best all-rounder.

Best free keyword research tool: Ubersuggest

The free version of Ubersuggest may be limited, but it is still a mighty app.

Best keyword research tool for question-based SEO keywords: Ahrefs

For those who are on the lookout for question-based SEO keywords, Ahrefs is perfect.

Best for unexpected discoveries: Soovle

If you’re ever stuck on coming up with ideas for keywords, Soovle is the answer.

Best keyword finder for beginners: Seobility

Since this SEO keyword tool is so easy to use, it’s a great option for SEO beginners.

Best for SEO veterans: SEMrush

Although using SEMrush does come at a costly price, it’s worth it if you’re looking for a world of data.