Seonaut — #4 Alternative to SEMrush / Ahrefs
Self-hostable open-source Go technical SEO crawler flagging canonicals, thin pages, and redirect chains
Audits status codes, H1–H6 structure, title/description pixel lengths, orphan URLs, OpenGraph tags, and multi-hop 301 chains across tens of thousands of URLs.
License: MIT · Pricing: Free & Open Source · Compare all SEMrush / Ahrefs alternatives · Official Website