OpenSEO

OpenSEO is an open-source alternative to Ahrefs and SEMrush. It is MIT licensed, self-hostable with one Docker command, and has no subscription. You pay per lookup instead of per month, and your data stays on your own infrastructure. It includes 17 tools: 6 keyword tools (overview, ideas, difficulty, SERP checker), 8 website and backlink tools (domain overview, page analyser, backlink profiles, competitor analysis), and 3 AI and local tools. Site audits run 117 technical checks across up to 500…