GEO (generative engine optimization) tools fall into three groups: monitoring who AI recommends, producing content at volume, and checking whether AI can read your site. Decide which part you are missing before picking a tool. The free, open-source GEO Doctor (geo-doctor) covers monitoring, gap finding, fact-based drafting and readability checks, and deliberately does not do volume content production.
Monitoring
These tools ask AI the same questions repeatedly and count how often you and your competitors are mentioned and recommended. When we asked DeepSeek GEO-tool questions, the products it recommended most were Profound, Otterly and Peec AI; check their sites for features and pricing.
GEO Doctor does this too, through the APIs of DeepSeek, Qwen, Kimi, Doubao, Yuanbao, ChatGPT, Perplexity, Gemini and Claude, archiving every answer. API answers are not logged in and mostly do not search the web, so confirm important findings in the apps.
Content production
These platforms plan topics, generate many articles and distribute them. The open-source GEOFlow is one: a self-hosted platform that needs Docker, PostgreSQL and Redis (AGPL-3.0).
GEO Doctor is not a content farm. It only drafts for questions where AI does not recommend you, uses only confirmed facts, checks drafts for hype and unconfirmed claims, and needs a person to approve each one.
Readability checks
If AI search cannot fetch your pages, nothing else matters. GEO Doctor checks robots.txt, AI crawlers, noindex and whether the main text is visible. It checks technical readability only.
Putting it together
GEO Doctor runs a loop: ask the AIs, find questions where a competitor is recommended and you are not (per AI), draft from the fact card, publish a fact site AI can read, and re-check the count every week with a report and a pull request to review. It does not promise rankings, inflate numbers or write fake reviews.
Free and MIT-licensed; API calls go on your own account. Source: https://github.com/Fangx-AI/geo-doctor
Disclosure: I maintain GEO Doctor, and this article was drafted with AI assistance (Claude) and reviewed by me. For other products I only state what can be checked; see their own sites for details.
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