Free SEO Checker by Spotibo - An SEO checker that analyses based on Google's algorithm 👀
Google Doc Publisher - Make Google Docs good-looking in two clicks
SEO Analyzer By Neil Patel - A free SEO analyzer for your site
Content Editor 2.0 by Surfer - Content Editor is the most advanced content optimization tool that allows you to write and grade your work.
Curatedseotools.com - Curated directory of the best SEO tools.
SEO Minion - Chrome extension & Firefox add-on to help you with SEO