The best keyword research tools uncover the right words for your SEO strategy. In this comprehensive guide, Introducing the Best Keyword Research Tools of 2025, their prices and the features that make them stand out.
1. Google Trends
- Price: Free
- Best feature: The tool tells you about the growth of keyword volume in percentage compared to a previous period.
Google Trends analyzes the popularity of a keyword in Google searches. It provides related topics and search queries, informing you of terms your audience might be searching for.
The tool shows you how popular a keyword phrase is by indicating its growth percentage compared to a previous period. If it says “Breakout,” it means the search term has grown by more than 5000% since the previous period.
2. Semrush Keyword Magic Tool
- Price: Freemium (Semrush’s suite of tools starts at $117.33/month).
- Best Feature: In Keyword Magic Tool, you can filter your keyword list by broad match, phrase match, exact match, related terms, questions, and more. You can even filter phrases by the words they include. The best thing is that you can export all the lists.
Semrush is another paid keyword research tool, but it’s definitely worth the cost. When you type a keyword into the overview field, you get a live update on volume, keyword difficulty, cost per click, and more.
You’ll also see lists of keyword variations, queries, and related keywords with their volume, CPC, and other data, along with a SERP analysis.
3. Soovle
- Price: Free
- Best Feature: Soovle allows you to download the results as a CSV file.
Soovle is a free keyword research tool that displays related keyword phrases from different sources.
Type in your main keyword and you’ll get keyword suggestions from search engines like Google, Bing, and Yahoo. You’ll also get suggested topics from YouTube, Wikipedia, Amazon, and other websites.
4. SEO.com
- Price: Free and trial versions available; plans start at $19/month.
- Best Feature: Discover competitor content ideas and track your rankings for these topics. You’ll also have access to SEO audit tools to gain further insight into performance.
SEO.com offers a seamless experience for consultants, freelancers, and contractors. In addition to compiling competitor keyword ideas, it’s also possible to track your keyword rankings over time and access SEO audit insights.
If you’re looking for a lightweight tool to reduce your time spent on SEO, consider SEO.com.
5. KeywordsFX
- Price: Free
- Best Feature: The tool is easy to use and includes keywords in question format to generate content ideas.
KeywordsFX is one of the best free keyword research tools you can use. Plus, it’s simple and doesn’t require registration.
You just need to type in your seed keyword, and it will suggest high-value related keywords. This free tool also includes keywords in question format, which helps you generate content ideas.
You can export the results as a CSV file or copy and paste the terms into the software of your choice.
6. Keyword Tool
- Price: Freemium (plans from $69/month).
- Best Feature: You can choose to include negative keywords to filter out terms that are not useful for your business.
Keyword Tool is one of the best free keyword research tools. It creates an extensive list of keywords that adds terms both before and after the keyword you searched for, allowing for a wide range of options.
In its free version, you will be able to get an extensive list of keywords ranging from short-tail to long-tail keywords.
If you sign up for the Pro version, you’ll get even more keywords and additional data, such as search volume and competition.
7. Moz Keyword Explorer
- Price: Freemium (plans from $39/month).
- Best Feature: The best feature of this tool is the huge amount of information you can export to a CSV file. You can also download the MOZ Bar, which appears at the top of your screen, allowing you to see the Page Authority, Domain Authority, Spam Score, and Shares of any website you are viewing.
While many of Moz’s tools are available only by subscription, its Keyword Explorer lets you run three free searches per day if you sign up for a free account.
When you perform keyword research with MOZ, you not only receive a list of keyword suggestions, but also the search volume, difficulty, opportunity, and potential. You can also view SERP analysis reports for each keyword, which is extremely helpful in your research.
8. BuzzSumo
- Price: Starting at $159/month (30-day free trial available).
- Best Feature: BuzzSumo provides high-quality content ideas and identifies influencers related to a keyword.
BuzzSumo allows you to see the most relevant content for a specific keyword. It also provides detailed analysis on current trends and the potential reach of content related to the terms you are researching.
You can filter results by different types of content (articles, videos, infographics, etc.) and measure their performance on social media. You can also identify key influencers in your niche, which is invaluable for collaboration or influencer marketing strategies.
9. Keywords Everywhere
- Price: Freemium (plans from $6/month).
- Best Feature: Displays long-tail keywords along with search volume, CPC, and competition data directly in the search results.
Keywords Everywhere is a browser extension that makes keyword research easier. When you install it, every time you perform a search on Google, Bing or YouTube, you will see relevant data such as search volume, CPC and ranking difficulty for key terms.
The tool also offers related keywords and FAQs that you can use to enrich your content strategies.
10. Ahrefs Keyword Generator
- Price: Freemium (plans from $108/month).
- Best Feature: Generates relevant keywords from search engines like Google, Bing, YouTube and Amazon.
Ahrefs’ keyword generator uses its vast database to provide you with keywords related to your seed keyword. In addition to showing search volume and keyword difficulty, it provides a SERP breakdown with detailed metrics such as backlinks and authority of the sites ranking at the top.
11. Mangools KWFinder
- Price: Freemium (plans from $49/month).
- Best Feature: Shows the SEO difficulty of keywords and includes a detailed SERP summary.
KWFinder is ideal for those looking for a clear and visual approach. In addition to providing basic data such as search volume and competition, it includes a complete competitor analysis for each keyword, allowing you to identify specific opportunities.
You can segment your research by language and location to focus your strategy on specific markets.
12. AlsoAsked
- Price: Freemium (plans from $15/month).
- Best Feature: Visually organizes Google’s “People Also Ask” data, showing how related terms are connected.
AlsoAsked is a simple yet powerful tool that generates topic clusters based on questions that appear in Google’s “People Also Ask” section.
Not only does this help you understand what your audience is searching for, but it also gives you clear ideas for creating content that directly addresses their needs. Plus, you can export the results in CSV or Google Sheets format.
Choosing the best keyword research tool depends on your specific needs, budget, and digital marketing goals.
If you’re looking for a free option, Google Trends, KeywordsFX, and Soovle are great places to start. On the other hand, premium tools like Semrush, Ahrefs, or BuzzSumo offer advanced features that are worth the investment if you need more detailed data and additional functionality.
For comprehensive strategies, combining multiple tools can give you a competitive advantage by optimizing your content for search engines and capturing the attention of your target audience.
