SEO tools help us with Keyword research, competitor analysis, Organic traffic and backlink analysis, on-page issues etc. It is not possible to check a lot of pages manually. Our main tools used; SEMRush to find relevant keywords, site-health check, position tracking, Google Ads history and research. Screaming Frog to crawl on-page issues. Ahrefs is an effective way to find backlink resources. Lastly, we should use all Google webmaster tools.