Google Analytics
Free web analytics service offered by Google that tracks and reports website traffic.

Google Search Console
Free web service by Google for webmasters. It allows webmasters to check the indexing status and optimize the visibility of their websites.

Google Trends
Analyzes the popularity of top search queries in Google Search across various regions and languages. The website uses graphs to compare the search volume of different queries over time. 

SEMrush
A competitive intelligence suite for online marketing, from SEO and PPC to social media and video advertising research.

Ahrefs
Toolset for backlink research, SEO, and content marketing.

Moz
A set of SEO tools, including keyword research, link building, site audits, and more.

Keywords Everywhere
Keyword research tool that shows search volume, CPC & competition data on multiple websites.

Ubersuggest
Free keyword research tool that generates suggestions for content and SEO optimization by showing the top keywords for any given phrase.

Answer The Public
A Neil Patel tool that collates, tracks and alerts you to the important questions being asked on Google’s search engine.

SERPstat
An all-in-one SEO platform for keyword research, on-page optimization, and backlink analysis.

Google Tag Manager
Free tool that allows you to add and manage marketing and analytics tags on your website without editing the code.

Yoast SEO
WordPress plugin that helps you optimize your website for search engines by analyzing the content for keywords, meta tags, and more.

KWFinder
Keyword research tool that provides data on keyword difficulty, search volume, CPC, and more.

MOZBar
A browser extension for Chrome and Firefox that allows users to see key SEO metrics for any website they visit.

Majestic SEO
Backlink analysis tool that provides information on the number and quality of backlinks pointing to a website.