Open Source Ahrefs & SEMrush
Website · Docs · Self-hosting · Connect an agent · REST API · SEO tools
OpenSEO (openseo.gg) is an open-source alternative to Ahrefs and Semrush. It covers keyword research, rank tracking, backlinks, site audits, AI visibility and local rank tracking, and reads your own Google Search Console and Analytics data. Run it on your own machine or server, read every line of it, and hand it to your AI agent.
No monthly plan: the software is free, and search data is paid per lookup at the price shown before it runs. A rank check is from $0.02, a keyword search of 150 ideas about $0.08.
⭐ If OpenSEO is useful to you, a star helps other people find it.
[!NOTE] OpenSEO is early and in active development. Issues and ideas are very welcome.
Every tool is one search: type a keyword, domain or URL, pick a country (and a city or state where it helps), press Enter, and everything loads together. The search is in the address, so any view can be bookmarked or shared. Each tool has its own page, and the guide goes through every screen.
SERP checker: the live top 10 with SERP features in place and each page's DR, links and traffic Domain overview: traffic, keywords, links, rankings, top keywords and pages
Backlinks: totals, monthly history, strongest links, anchors and link intersect Competitors: who you compete with, and the keyword gap with any of them
From the project README.
Add the radar badge to your README — it shows your project was picked up by MCP Radar and links to this page:
[](https://mcp.liqiwa.com/s/duckduckdeploy--openseo.html)
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