Open-source SEO platform you can self-host, with Cloud plans
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Stage
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Founded
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Based in
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Pricing model
Freemium
Free
Pricing
Self-hosted is free forever. Cloud: $3/month after 7-day free trial. Credits in packages of 500, 1,000, 5,000, or 10,000 ($5, $10, $50, or $100). Provider usage charged separately at provider's rates or provider cost plus 30% markup on Cloud credits.
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Key features
Google keyword rank tracking by location and device
Keyword research with volume, difficulty, intent and cost estimates
Backlink inspection with referring domains and new/lost links
SERP history with snapshot storage from every check
Search Console integration for clicks, impressions and queries
Rank alerts with target position monitoring
Competitor benchmarking to see rival domains in results
Site audit with bounded HTML sample
MCP server for Claude, ChatGPT, Cursor and other agents
REST API with OpenAPI specification and TypeScript, Python, Go SDKs
100+ automated checks across 8 categories
Mobile and desktop Lighthouse audits
Security header analysis including CSP, HSTS, X-Frame
SSL certificate chain and expiry monitoring
Core Web Vitals measurement
Technology stack detection
Accessibility audit with screenshot contrast analysis
PDF, JSON, and Markdown export
Permanent public report URLs
Free tools including DNS lookup, SSL checker, and redirect tracer
What makes it different
Bring your own SERP provider with no markup on costs
Full rank history export anytime with no data retention limits
Same features in self-hosted and Cloud versions, features don't move behind paywall
See provider and cost of every rank check in transparent breakdown
Open source under AGPL-3.0 with full self-hosting on your infrastructure
Truly free with no account, credit card, or subscription required
Comprehensive 8-category scoring system in addition to Lighthouse
Globally distributed workers to test from multiple regions
Permanent public URLs allow reports to be shared and compared over time
bisibility
BeaverCheck