OpenSEO
Open-source Ahrefs and SEMrush alternative you can self-host
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 pages. Local rank grids range from 3x3 to 7x7. OpenSEO also tracks whether ChatGPT, Gemini, Claude, and Perplexity cite your site, measured across 120+ AI models.
