SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.
Curatedseotools.com - Curated directory of the best SEO tools.
SEO Analyzer By Neil Patel - A free SEO analyzer for your site
SEO Toolbelt - Find the best SEO tools for the job
Screpy - Screpy is a web analysis tool that can analyze all pages of your websites in one dashboard and monitor them with your team. It's powered by Lighthouse and it also includes some different analysis tools (SEO, SERP, W3C, Uptime, etc).
KatLinks.io - Rank Higher and Get More Traffic with an affordable SEO Tool