OpenSEO is an open-source Semrush and Ahrefs alternative with 22,707 stars: Reveneau

Why it mattersA small team on a $100-a-month SEO subscription is paying for a workflow that an open-source tool now covers, and an MCP server means the agent in your terminal can run that work without a browser tab.

A small team on a $100-a-month SEO subscription has been paying for the same data four or five companies resell. OpenSEO is a free, MIT-licensed project that goes to the source instead, and its latest release adds Claude and Perplexity tracking so an agent can also read the SEO work it just did.

OpenSEO is published by the Every App organisation at every-app/open-seo. The repository carries 22,707 stars at the time of writing, is MIT licensed, and ships a tagged release every week or two. The project launched a new "AI Visibility" feature on Product Hunt and sits as the #1 Product of the Day on its launch page.

Six workflows on top of DataForSEO

OpenSEO ships six workflows, in the author's own words: keyword research, rank tracking, competitor insights, backlinks, site audits, and AI visibility. The AI visibility screen stores a list of prompts, runs them against the chat engines on a schedule, and records whether the user's domain was named in the answer and which sources the engine cited. v0.1.12 added Claude and Perplexity to that list, alongside the engines the project supported before.

The data under all of that comes from DataForSEO, a wholesale SEO data API. OpenSEO is a client on top of it: the Docker and Cloudflare self-host guides both ask the user to supply their own DataForSEO key, and the hosted service at openseo.so runs the same code with a key the project pays for.

$10 a month hosted, or free with your own key

Self-hosting is free. The hosted plan at openseo.so/pricing starts at $10 a month, which the project describes as "$10 of usage every month" at its own list prices: "about $0.05 per search at typical result limits", "about $0.08 for a domain overview with one year of history", and "about $0.002 per check" for one prompt on one AI platform. The project's README says the hosted service "makes money by charging 28% extra for every request we make to DataForSEO". Google Search Console data is free and does not count against the usage balance.

An MCP server for the same workflows

The project ships an MCP server so a coding agent can call the same workflows from a terminal. The README names Claude Code, OpenClaw and Hermes as the clients the project tests against, and ships "Agent Skills" that package multi-step work (for example a keyword cluster from a seed phrase, or a competitor sweep) as a single prompt the agent can run. Both self-host paths include the MCP: the data stays in the user's own OpenSEO install.

Source

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