SEO & GEO
SaaS, open source and skills for seo & geo work — with the limits of each written down.Before you pick
What decides it
How many times it re-runs each prompt decides whether the number means anything. Identical prompts return different answers; single-run scores are noise.
What to avoid
You pay per tracked prompt, so the list stays short and generic. The questions you lose on are the ones nobody thought to add.
What is changing
Measurement is moving from polling answers to server-side evidence: which AI crawlers fetched what, and what traffic followed. Dashboards increasingly emit fixes, not just scores.
SaaS
Hosted products you sign up for.Leading
Established picks, at the top of today's aggregate.
- 1SemrushPairing a full-stack SEO toolkit with an AI Visibility Toolkit that tracks brand citations across ChatGPT, Gemini, Perplexity and AI Overviews.
- 2ProfoundEnterprise-grade AI visibility with real user-facing data across 10+ AI engines plus a unique Prompt Volumes metric.
- 3AhrefsBacklink and keyword depth combined with a Brand Radar for monitoring AI mentions — a classic-SEO powerhouse extending into GEO.
- 4WritesonicPairing GEO monitoring across ChatGPT, Gemini, Perplexity and Claude with an AI content-generation engine in one platform.
- 5SE RankingEmbedding AI visibility directly into a full-stack SEO performance suite at a mid-market price.
Emerging
Newer challengers, surfaced by two or more sources.
Open source
Repositories you run yourself.Leading
- 1SerpBearThe go-to self-hosted keyword rank tracker (~2.0k stars) — unlimited domains, Google Search Console integration and email alerts. Highest-star standalone OSS app in this set.
- 2advertoolsThe practitioner reference library for scriptable technical SEO (~1.4k stars): a Python/pandas toolkit with a Scrapy crawler, robots.txt and sitemap parsing, SERP and log analysis. The most mature, respected pro-grade OSS SEO library.
- 3awesome-seo-tools (SerpApi)A vetted directory of SEO tooling (~1.0k stars) across 10 categories, maintained by SerpApi. A starting point for discovery rather than a tool you run — hence medium.
- 4seo-audits-toolkitAn all-in-one self-hosted audit app (~802 stars) by Stan Girard (Quivr author): Lighthouse scoring, security headers, SERP rank, and keyword/image/sitemap extraction.
- 5LibreCrawlA desktop SEO crawler (~787 stars) positioned as a free Screaming Frog / DeepCrawl alternative — JS rendering, link mapping, Core Web Vitals via PageSpeed, and CSV/JSON/XML export.
Emerging
- 1mverab/eGEOagentsTakes a URL or markdown file through four agents that score, rewrite and add JSON-LD, as a CLI, MCP server or Claude skill.
- 2liangdabiao/GEO-Content-Optimizer-SkillTwo Claude Code skills, documented in Chinese, that generate schema, check AI readability and test citation rates through Kimi or Perplexity keys.
- 3norahe0304-art/30x-seoInstalls two dozen Claude Code skills at once, covering audits, internal links, programmatic pages, local listings and rank monitoring under one /seo command.
- 4199-biotechnologies/claude-skill-seo-geo-optimizerRuns over local HTML, Markdown or JSX files rather than a live site, extracting entities and emitting JSON-LD schema plus audit reports.
- 5mangollc/claude-seo-skillAimed at agencies juggling client sites: pairs Firecrawl crawls with keyword research, local listings, backlinks and ready-to-send monthly client reports.
Skills
Skills you drop into a coding agent.Leading
- 1claude-seo (Daniel Agrici)The recognized leader among SEO/GEO Agent Skills (~12.2k stars, MIT): 25+ sub-skills and sub-agents covering technical SEO, E-E-A-T, schema, GEO/AEO and local/international SEO with prioritized action plans. Notably pragmatic. Carries strategy and audit checklists — pair with an app-track suite for live rank/backlink data.
- 2geo-seo-claude (Zubair Trabzada)A GEO-first SKILL.md bundle (~9.1k stars): citability scoring, AI-crawler / robots.txt analysis for 14+ bots, llms.txt and schema for ChatGPT, Perplexity, Gemini and AI Overviews. Honest caveat: the repo is overtly promotional (tied to a paid community), so raw stars may overstate maturity.