Moz.com – A source for fantastic SEO software, tools, and resources.

Keywordtool.io – A fantastic keyword tool for long string keywords.

Google Keyword Planner – Google’s own keyword planning software to track search volume and related keywords.

Google Mobile-Friendly Test – Google’s own mobile usability test and suggestions.

Google Pagespeed Insights – Google’s own sitespeed test.

Google Analytics – Google’s own analytical software for all your website data insights.

Google Search Console – Google’s own webmaster console for site health and updates.

Bing Webmaster Tools – Bing’s own webmaster console for site health and updates.

Copyscape.com – A tool to identify duplicate content across the internet of your website.

SimiliarWeb.com – Compare your website to your competitors in terms of traffic, and more.

Lucidcharts.com – A fantastic tool to quickly establish your websites UX and architecture.

CloudFlare – A fantastic CDN option for faster sitespeed.

BrowserStack.com – A tool for responsive testing and mobile usability.

Amazon Web Services – In our opinion, the fastest and most secure servers for your website hosting. For more SEO tools, check out Moz’s list of the best 100 free SEO tools.