Description: One of the most famous tools for keyword analysis, competitive research and content improvements. It has maybe the best SEO API in the market.

Platform: Website

Price:  Free + Paid Subscriptions

Description: Nibbler is a free tool for testing websites. Enter the address of any website it will give you a report scoring the website in 10 key areas, including accessibility, SEO, social media and technology.

Platform: Website

Price:  Free

Description: This is the best free SEO tool on the market for backlink analysis, keyword research, and recently also for domain/competitor analysis. If you have no budget or you just started this is the tool for you.

Platform: Website

Price:  Free

Description: 5 in 1 SEO tools ready to help you as a content creator. Mangools with its cheapest price is perfect for every blogger or small business that desires a complete suite of tools without finishing all the budget.

Platform: Website

Price:  Free trial + Paid Subscriptions

Description: A very useful and reliable SEO audit tool to test the speed of the website, check broken links and redirects, find non-optimized images, technical errors and more.

Platform: Website

Price: Paid Subscriptions

Description: BuzzSumo is one of the top social media analytics tools for researching content in your niche and see their social engagement, shares, backlinks and other useful informations.

Platform: Website

Price:  Free + Paid Subscriptions

Description: Another big player in the world of SEO, Moz offers tools like Link Explorer to find baclinks, Keyword Explorer and MozBar that produce accurate on-page metrics. Very useful free tools but not for everyone the pro plans.

Platform: Website

Price:  Free + Paid Subscriptions

Description: The perfect tool for backlinks analysis. Ahrefs is a complete SEO tool with all the essentials features of the others, with an extraordinary link index but not for every budget.

Platform: Website

Price:  Paid Subsriptions

Description: SimilarWeb gives you global multi-device market intelligence to understand, track, and grow your digital market share. This website is very useful to make a quick search of competitor’s traffic and strategies free.

Platform: Website

Price:  Free + Paid

Description: This tool will make a deep analysis of your website in order to give you a complete report about what it is not working and how to fix it.

Platform: Website

Price:  Free + Paid Subscriptions

Description: Siteliner is a very useful tool to check your website and find out broken links, dublicate contents, errors, redirect and more.

Platform: Website

Price:  Free

Description: Very quick SEO audit tool that make simple analyse your website and receive useful information about how it can be improved.

Platform: Website

Price:  Free + Paid Subscriptions

Description: Generate XML sitemaps of your website to let Google’s bot navigate your site easily and rank faster on SERP.

Platform: Website

Price:  Free + Paid Subscription

Description: Keyword Tool is perfect if you want to find and analyse long tail keywords searched on Google, YouTube, Amazon, eBay, Instagram and more.

Platform: Website

Price:  Free + Paid Subscriptions

Description: Install Keyword Everywhere and any time you make a search on Google it will show you the volume of search, the CPC value, the competition and related keywords searched by users.

Platform: Add-on for Chrome and Firefox

Price:  Free