OpenSEO
OpenSEO does the same keyword research and backlink checking as Ahrefs, but it's open source and starts at $10/month instead of $129 — self-host it for free if you don't mind running your own server.
🔗 Visit OpenSEO
Description
SEO tools like Ahrefs and Semrush are genuinely useful but expensive enough that many small businesses and solo marketers just go without one. OpenSEO's pitch is straightforward: the same core functionality — keyword research, backlink analysis, rank tracking, site audits — as an open-source project, either self-hosted for free or via a low-cost hosted subscription.
OpenSEO covers keyword research with demand and difficulty metrics, backlink inspection and link-quality analysis, rank tracking over time, technical site audits, domain overview and organic traffic estimation, AI-visibility monitoring, and free Google Search Console data. It also offers MCP integration, letting Claude, ChatGPT or Gemini query your SEO data directly. With 7,621 GitHub stars and an active Discord community, it has real open-source traction, not just a repo nobody uses — and its usage-based hosted pricing starting at $10/month (with $10 of included monthly credits) is positioned explicitly as ~95% cheaper than Ahrefs.
💬 Our review
The short version: OpenSEO is the right pick for anyone who's looked at Ahrefs' $129+/month price tag and decided a $99B keyword database is overkill for their actual needs — the core workflows are there at a fraction of the cost.
The 7,621 GitHub stars and active Discord are a meaningful signal in the open-source SEO space specifically, where a lot of self-hosted alternatives quietly die after a few commits — this one has real community momentum behind it. MCP integration is a genuinely forward-looking feature; being able to ask an AI assistant to pull your rank-tracking data directly is a real workflow improvement over exporting CSVs. The honest trade-off versus Ahrefs or Semrush is data depth and freshness — the established players have spent over a decade building crawl infrastructure and backlink indexes at a scale a newer open-source project can't fully match yet, so for enterprise-level competitive SEO research, the incumbents likely still edge out OpenSEO on raw data coverage.
💰 Pricing
📊 Global score
🤖 AI-enriched data
Gratuit en self-hosted ; hébergé dès 10$/mois avec 10$ de crédits mensuels inclus ; essai gratuit à 0,50$ de crédits
Pros
95% moins cher qu'Ahrefs selon leurs chiffres
Self-hosting gratuit disponible
7600+ étoiles GitHub, communauté active
Intégration MCP pour requêter via IA
Cons
Profondeur de données probablement inférieure aux leaders établis
Index de backlinks plus jeune et potentiellement moins complet
Moins adapté à la recherche concurrentielle à très grande échelle