There are hundreds of free SEO tools in the market. But, we will be focusing on the tools from which we can make most out of it. We will be evaluating tools based on the below criteria:

- Broadly used by the SEO Professionals.
- Offers actionable data.
- Truly free.

Here are the SEO tools:

1. Google Analytics :
Google Analytics is absolutely free and the most popular web analytics tool offered by Google used for the tracking of website performance and allows the website owners to review all information and data about how users see your website.

2. Google Search Console :
Google Search Console (formerly known as Google Webmaster Tools) is another free service offered by Google. It helps in reviewing, managing, and troubleshooting website's presence in Google Search results.

3. Screaming Frog :
Screaming Frog is free of cost and innovative SEO Spider tool that allows you to easily analyze your website from an on-page SEO perspective. In the free version, you can analyze up to 500 website pages.

4. Keyword Planner:
There is no surprise that Google giving a lot without any charges and here's one more SEO service offered by them - Keyword Planner (formerly known as Google Keyword Tool). Keyword Planner is a keyword research tool that provides ideas and helps you in keyword research for your business. It also provides you traffic estimates of keywords for your website.

5. Small SEO Tools :
Small SEO Tools is a free collection of approx 100 SEO tools on one platform. where each and every tool performs a very specific task. It's a collection of useful information like backlink checker, proxy tool, keywords ranking checker, etc.

6. Google Tag Manager :
Ah, one more free offering by Google, i.e. Google Tag Manager AKA GTM. GTM allows you to inject "tags"(like google analytics) into your HTML. It helps you avoid touching the source code of the website,  online marketers can quickly add and make changes to tags on their own