We usually discover some great tools and stick to them, while ignoring there is a whole world of other tools we haven’t used or even discovered yet. So in this article, I am assuming you already know all the great popular free SEO tools, and I will try and present some lest know but very useful SEO tools, by category:

1. Keyword Research Tools

KWFinder.com

A brilliant tool for those looking for an alternative to the now limited by active campaigns Google AdWords Keyword Planner. The only bad side is that it’s limited two only 2 searches a day.

Keyword finder - AdWords Alternative

KeywordTool.io

An excellent keyword research tool that scrapes Google Autocomplete results and gives them all to you in a nice list after hitting the Copy all button.

Keywordtool.io

Soovle

Soovle is a free tool that pulls autocomplete suggestions from a handful of different sources like Google, YouTube, Amazon, and Wikipedia.

Soovle

Answer the public

If you want to know what questions your target audience types into Google, you can use Answer The Public to get a list of them. Ignore the creepy old dude and simply select the language and put in your keywords.

 

Answer the public tool

SEO Hero

Finds all concepts, entities and N-Gram’s related to your topic or keyword. Or, in plain English, SEO Hero uncovers “LSI Keywords” that you can add to your content to increase relevancy.

SEO Hero Tool

Google Search Location Changer Tool / isearchfrom.com

If you need to see Google’s results for a specific local area even if you don’t live there, Google Search Location Changer Tool and isearchfrom.com are the tools to use.

Google Location Changer

Google Correlate

Google Correlate shows you keywords that tend to get searched for together or in a very similar tren pattern. For example, the screenshot below shows how “digital marketing” searchers had the same trend with “ux design”.

Google Correlate

 

 

2. Content Optimisation

Am I Responsive?

Checks website responsiveness by showing you how it looks on desktop, laptop, tablet, and mobile.

Varvy

Checks whether a web page is following Google’s guidelines. If your website falls short, it tells you what needs fixing.

HEADMasterSEO

Simple bulk status code (e.g. 200, 301, 404, etc.) and redirect checker. Also checks response time, response headers, and HTTP header fields (X-Robots-Tag, Link, Vary). Includes filtering and a bunch of other advanced features.

Lipperhey / WooRank

Tools like Lipperhey and Woorank analyzes your site for technical SEO issues and provides a basic SEO content analysis.

KnowEm Social Media Optimizer

Analyses your web page to see if it’s well-optimised for social sharing. It checks for markup from Facebook, Google+, Twitter, and LinkedIn.

 

3. Link Building Tools

Drop My Link

Combines your keywords with advanced Google search operators to uncover link building opportunities. Very useful for finding guest post opportunities, link/resource pages, link roundups, etc.

Check My Links

If you do Broken Link Building (or The Moving Man Method), then you’ll love Check My Links. With a click of a button, this Chrome extension quickly checks any webpage for broken links.

LinkMiner

LinkMiner is a free Chrome extension that shows you how many links the broken link has pointing to it. Uber helpful for broken link building.

 

4. Monitorization Tools

SERPLab

Free Google rankings checker. Updates up to 50 keywords once every 24 hours (server permitting).

 

 

How amazing are the tools? Know of any other I should mention?

PS: A big thanks to Brian Dean, Ahrefs and redditors for inspiring this list.