SEO tools-Best-SEO Tools-That-You-Cannot-Miss-In-2021-Free-SEO

Best SEO Tools That You Cannot Miss In 2021

There are so many SEO tools on the market that choosing between one or the other can be quite complicated and we must remember that the success or failure of our website depends on this type of application.

Best SEO Tools

While there are many free SEO tools, most of them are really worth paying.

This is not a secret to anyone, so this small list only includes tools that are not free (although some have a free trial).


Ahrefs is a tool already known to many and that allows to obtain detailed information about the outgoing links of one or more web pages.

The main attraction of this website is that it allows to have a great variety of interesting characteristics for the analysis of the competition with measures of the rank of a website, UR, DR, backlinks, referral links and organic keywords.

Authority Labs

This paid application allows you to perform comparative keyword analysis. The tool is much more powerful than other tools of its kind.

Moz Open Site Explorer

This tool is as powerful as it is simple. It allows an analysis of links on our website.

The analysis allows us to obtain information about the possibility of SPAM in the links, incoming or outgoing links to our website and a comparison of links.

We can take advantage of up to 10 free analyzes per month or subscribe and get unlimited analyzes.


SEMRush like Ahrefs has been in the market for a long time and also allows you to analyze the competitor’s strategy, traffic, competitor keywords and much more.

Keyword analysis allows you to get suggestions on related keywords to get more ideas.

One downside is that it can be very expensive compared to other SEO tools.


Mangools offers a wide variety of tools with many interesting features that allow you to analyze keywords, monitor links, competition analysis and check the competition that may exist by keywords.


Majestic is one of the most complete paid SEO tools on the market, as it has a large number of super-powerful tools.

This tool has a gigantic database that is compared to Ahrefs, and, in addition, the updates are super fast, which ensures that we have the correct data.

Majestic offers an incredibly good tool for link analysis using Trust Flow and Citation Flow.

The first refers to the analysis of links using trusted recommendations, while the second refers to the number of mentions of the site.

Free SEO Tools That You Should Not Miss

As you could see, all the tools above are paid tools, since as we explained, they are the ones that are more exact. However, we also leave you below free SEO tools that are very good.

Although these web applications are quite powerful and have great capabilities, it is best to use them in conjunction with some payment tools to obtain better results.

Google AdWords Keyword Planner

The Google keyword planner or Google Keywords planner is a good option to find keywords that almost everyone knows.

For many, it is one of the best free SEO tools, but personally, with the changes in the platform, it has become a bit more cumbersome to find the information we are looking for, in addition to that it no longer has the volume of search by keyword.


Ubersuggest is a tool for analysis of keywords, SERP’s and competition and trends by a search that is quite good. The results may not be completely accurate, but they are not bad for something that is free.

Something interesting is that it provides keyword ideas and long tails for our strategy.

In fact, as an added bonus, you can visit the blog of Neil Patel, creator of Ubersuggest, where he offers a great variety of super interesting tips. Sure, you will have to know some English.

Keywords Everywhere

Keywords Everywhere is a plugin for Firefox and Google Chrome that combines the best of keyword analysis together with the information provided by Google, Bing, Amazon, eBay, YouTube and much more.

The information it offers ranges from suggested keywords, CPC and monthly searches. One downside is that you cannot search by region, but to be free it is not bad at all and it is absolutely essential.

MOZ Toolbar

This little plugin for Chrome lets us know if a link is follow or not follow, age of the domain, location and much more.

An indispensable tool for finding free follow links for our website.

Google Trends

The best way to get traffic on Google is to follow the trends that are being generated. In fact, that’s why most viral websites get a large audience organically.

Google Trends allows free monitoring of what is currently trending and knowing what the behaviour of certain terms has been over a period of time.

In this way, it is possible not only to know what the search trend is at the moment but also to predict how the public will behave during a certain time.


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